# Geometry: A Common Core Program

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1 1 Tools of Geometry This chapter begins by addressing the building blocks of geometry which are the point, the line, and the plane. Students will construct line segments, midpoints, bisectors, angles, angle bisectors, perpendicular lines, parallel lines, polygons, and points of concurrency. A translation is a rigid motion that preserves the size and shape of segments, angles, and polygons. Students use the coordinate plane and algebra to determine the characteristics of lines, segments, and points of concurrency. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 1.1 Let's Get This Started! Points, Lines, Planes, Rays, and Line Segments Identify and name points, lines,planes, rays, and line segments. Use symbolic notation to decribe points, lines, planes, rays, and line segments. Describe possible intersections of lines and planes. Identify construction tools. Distinguish betweena a sketch, a drawing, and a construction. G.CO.1 Point Line Collinear points Plane Compass Straightedge Sketch Draw Construct Coplanar lines Skew lines Ray Endpoint of a ray Line segment Endpoints of a line segment Congruent line segments 1.2 Let's Move! Translating and Constructing Line Segments Determine the distance between two points. Use the Pythagorean to derive the Distance Formula. Apply the Distance Formula on the coordinate plane. Translate a line segment on the coordinate plane. Copy or duplicate a line segment by construction. G.CO.1 G.CO.2 G.CO.4 G.CO.5 G.CO.6 G.CO.12 G.CO.13 Distance Formula Transformation Rigid motion Translation Pre-image Image Arc CONSTRUCTIONS Copying a lint segment Duplicating a line segment Geometry: A Common Core Program 1

2 1.3 Treasure Hunt Midpoints and Bisectors Determine the midpoint of a line segment on a coordinate plane. Use the Midpoint Formula. Apply the Midpoint Formula on the coordinate plane. Bisect a line segment using patty paper. Bisect a line segment by construction. Locate the midpoint of a line segment. G.CO.12 G.GPE.6 Midpoint Midpoint Formula Segment bisector CONSTRUCTIONS Bisecting a line segment. 1.4 It's All About Angles Translating and Constructing Angles and Angle Bisectors Translate an angle on the coordinate plane. Copy or duplicate an angle by construction. Bisect an angle by construction. G.CO.1 G.CO.2 G.CO.4 G.CO.5 G.CO.6 G.CO.12 Angle Angle bisector CONSTRUCTIONS Copying an angle Duplicating an angle Bisecting an angle 1.5 Did You Find a Parking Space? Parallel and Perpenddicular Lines on the Coordinate Plane Determine whether lines are parallel. Identify and write the equations of lines parallel to given lines. Determine whether lines are perpendicular. Identify and write the equations of lines perpendicular to given lines. Identify and write the equations of horizontal and vertical lines. Calculate the distance between a line and a point not on a line. G.CO.1 G.GPE.4 G.GPE.5 Point-slope form 1.6 Making Copies Just as Perfect as the Original! Constructing Perpendicular Lines, Parallel Lines, and Polygons Construct a perpendicular line to a given line. Construct a parallel line to a given line through a point not on the line. Construct an equilateral triangle given the length of one side of the triangle. Construct an isosceles triangle given the length of one side of the triangle. Construct a square given the perimeter (as the length of a given line segment). Construct a rectangle that is not a square given the perimeter (as the length of a given line segment). G.CO.12 Perpendicular bisector CONSTRUCTIONS A perpendicular line to a given line through a point on the line A perpendicular line to a given line through a point not on the line 1.7 What's the Point? Points of Concurrency Construct the incenter, circumcenter, centroid, and orthocenter. Locate points of concurrency using algebra. G.CO.12 G.MG.3 Concurrent Point of concurrency Circumcenter Incenter Median Centroid Altitude Orthocenter Geometry: A Common Core Program 2

3 2 Introduction to Proof This chapter focuses on the foundations of proof. Paragraph, two-column, construction, and flow chart proofs are presented. Proofs involving angles and parallel lines are completed. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 2.1 A Little Dash of Logic Foundations for Proof Define inductive and deductive reasoning. Identify methods of reasoning. Compare and contrast methods of reasoning. Create examples using inductive and deductive reasoning. Identify the hypothesis and conslusion of a conditional statement. Explore the truth values of conditional statements. Use a trutth table. G.CO.9 Induction Deduction Counterexample Conditional statement Propositional form Propositional variables Hypothesis Conclusion Truth value Truth table 2.2 And Now From a New Angle Special Angles and Postulates Calculate the complement and supplement of an angle. Classify adjacent angles, linear pairs, and vertical angles. Differentiate between postulates and theorems. Differentiate between *Euclidean and non-euclidean geometries. G.CO.9 Supplementary angles Complementary angles Adjacent angles Linear pairs Vertical angles Postulate Euclidean geometry Linear Pair Postulate Segment Addition Postulate Angle Addition Postulate Geometry: A Common Core Program 3

4 2.3 Forms of Proof Paragraph Proof, Two-Column Proof, Construction Proof, and Flow Chart Proof Use the addition and subtraction properties of equality. Use the reflexsive, substituition, and transitive properties. Write a paragraph proof. Complete a two-column proof. Perform a construction proof. Complete a flow chart proof. G.CO.9 Additional Property of Equality Subtraction Property of Equality Reflexive Property Substitution Property Transitive Property Flow chart proof Two-column proof Paragraph proof Construction proof Right Angle Congruence Congruent Supplement Congruent Complement Vertical Angle 2.4 What's Your Proof? Angle Postulates and s Use the Corresponding Angle Postulate Prove the Alterate Interior Angle Prove the Alternate Exterior Angle Prove the Same-Side Interior Angle Prove the Same-Side Exterior Angle G.CO.9 Corresponding Angle Postulate Conjecture Alternate Interior Angle Alternate Exterior Angle Same-Side Interior Angle Same-Side Exterior Angle Geometry: A Common Core Program 4

5 2.5 A Reversed Condition Parallel Line Converse s Write and prove parallel line converse conjectures. G.CO.9 Converse Corresponding Angle Converse Postulate Alternate Interior Angle Converse Alternate Exterior Angle Converse Same-Side Interior Angle Converse Same-Side Exterior Angle Converse Geometry: A Common Core Program 5

6 3 Perimeter and Area of Geometric Figures on the Coordinate Plane Chapter Lesson Title Key Math Objective CCSS Key Terms 3.1 Tranforming to a New Level! Using Transformations to Determine Area This chapter focuses on calculating perimeter and area of figures represented on the coordinate plane, through the use of distance, midpoint, and slope. Determine the areas of squares on a coordinate plane. Connect transformations of geometric figures with number sense and operations. Determine the areas of rectangles using transformations. G.CO.6 G.GPE.4 G.GPE.5 G.GPE.7 G.MG.2 G.MG.3 Modules Worked Examples Peer Analysis N/A Talk the Talk Technology 3.2 Looking at Something Familiar in a New Way Area and Perimeter of Triangles on the Coordinate Plane Determine the perimeter of triangles on the coordinate plane. Determine the area of triangles on the coordinate plane. Explore the effects that doubling the area has on the properties of a triangle. G.CO.6 G.GPE.5 G.GPE.7 N/A 3.3 Grasshoppers Everywhere! Area and Perimeter of Parallelograms on the Coordinate Plane Determine the perimeter of parallelograms on a coordinate plane. Determine the area of parallelogams on a coordinate plane. Explore the effects that doubling the area has on the properties of a parallelogram. G.GPE.5 G.GPE.7 N/A 3.4 Leavin' On a Jet Plane Area and Perimeter of Trapezoids on the Coordinate Plane Determine the perimeter and area of trapezoids and hexagons on a coordinate plane. Determine the perimeter of composite figures on the coordinate plane. G.CO.6 G.GPE.7 Bases of a trapezoid Legs of a trapezoid Geometry: A Common Core Program 6

7 3.5 Composite Figures on the Coordinate Plane Area and Perimeter of Composite Figures on the Coordinate Plane Determine the perimeters and areas of composite figures on a coordinate plane. Connect transformations of geometric figures with number sense and operations. Determine perimeters and areas of composite figures using transformations. G.GPE.7 Composite figures Geometry: A Common Core Program 7

8 4 Three-Dimensional Figures This chapter focuses on three-dimensional figures. The first two lessons address rotating and stacking two-dimensional figures to created three-dimensional solids. Cavalieri s principle is presented and is used to derive the formulas for a volume of a cone, pyramid, and sphere. The chapter culminates with the topics of cross sections and diagonals in three dimensions. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 4.1 Whirlygigs for Sale! Rotating Two-Dimensional Figures through Space Apply rotations to two-dimensional plane figures to create three-dimensional solids. Describe three-dimensional solids formed by rotations of plane figures through space. G.GMD.4 Disc 4.2 Cakes and Pancakes Translating and Stacking Two- Dimensional Figures Apply translations for two-dimensional plane figures to create three-dimensional solids. Describe three-dimensional solids formed by translations of plane figures through space. Build three-dimensional solids by stacking congruent or similar two-dimensional plane figures. G.GMD.4 G.MG.3 Isometric paper Right triangular prism Oblique triangular prism Right rectangular prism Oblique rectangular prism Right cylinder Oblique cylinder 4.3 Cavaleieri's Principles Applications of Cavalieri's Principles Explore Cavalieri's Principle for two-dimensional figures (area). Explore Cavalieri's Principle for three-dimensional objects (volume). G.GMD.1 G.GMD.2 G.GMD.4 Cavalieri's Principle 4.4 Spin to Win Volume of Cones and Pyramids Rotate two-dimensional plane figures to generate three-dimensional figures. Give an informal argument for the volume of cones and pyramids. G.GMD.4 N/A Geometry: A Common Core Program 8

9 4.5 Spheres a la Archimedes Volume of a Sphere Derive the formula for the volume of a sphere G.GMD.4 Sphere Radius of a sphere Diameter of a sphere Great circle of a sphere Hemisphere Annulus 4.6 Turn Up the... Using Volume Formulas Apply the volume for a pyramid, a cylinder, a cone, and a sphere to solve problems. G.GMD.3 N/A 4.7 Tree Rings Cross Sections Determine the shapes of cross sections. Determine the shapes of the intersections of solids and planes. G.GMD.4 N/A 4.8 Two Dimensions Meet Three Dimensions Diagonals in Three Dimensions Use the Pythagorean to determine the length of a diagonal of a solid. Use a formula to determine the length of a diagonal of a rectangular solid given the lengths of three perpendicular edges. Use a formula to determine the length of a diagonal of a rectangular solid given the diagonal measurements of three perpendicular sides. G.MG.3 N/A Geometry: A Common Core Program 9

10 5 Properties of Triangles This chapter focuses on properties of triangles, beginning with classifying triangles on the coordinate plane. s involving angles and side lengths of triangles are presented. The last two lessons discuss properties and theorems of 45º-45º-90º triangles and 30º-60º-90º triangles. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 5.1 Name That Triangle Classifying Triangles on the Coordinate Plane Determine the coordinates of a third vertex of a triangle, given the coordinates of two vertices and a decription of the triangle. Classify a triangle given the locations of its vertices on a coordinate plane. G.GPE.5 N/A 5.2 Inside Out Triangle Sum, Exterior Angle, and Exterior Inequality s Prove the Triangle Sum Explore the relationship between the interior angle measures and the side lengths of a triangle. Identify the remote interior angles of a triangle. Identify the exterior angle of a triangle. Explore the relationship between the exterior angle measures and two remote interior angles of a triangle. Prove the Exterior Angle Prove the Exterior Angle Inequality G.CO.10 Triangle Sum Remote interior angles of a triangle Exterior Angle Exterior Angle Inequality 5.3 Trade Routes and Pasta Anyone? The Triangle Inequality Explore the relationship between the side lengths of a triangle and the measures of its interior angles. Prove the Triangle Inequality. G.CO.10 Triangle Inequality 5.4 Stamps Around the World Use the Pythagorean to explore the relationship between the side lengths of a triangle and the measures of its interior angles. Properties of a Triangle Prove the Triangle G.CO Triangle 5.5 More Stamps, Really? Use the Pythagorean to explore the relationship between the side lengths of a triangle and the measures of its interior angles. Properties of a Triangle Prove the Triangle G.CO Triangle Geometry: A Common Core Program 10

11 6 Similarity Through a Transformation This chapter addresses similar triangles and establishes similar triangle theorems as well as theorems about proportionality. The chapter leads student exploration of the conditions for triangle similarity and opportunities for applications of similar triangles. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 6.1 Big and Small Dilating Triangles to Create Similar Triangles Prove that triangles are similar using geometric theorems. Prove that triangles are similar using transformations. G.SRT.1.A G.SRT.1.B G.SRT.2 G.SRT.5 Similar triangles 6.2 Similar Triangles or Not? Similar Triangle s Use constructions to explore similar triangle theorems. Explore the Angle-Angle (AA) Similarity Explore the Side-Side-Side (SSS) Similarity Explore the Side-Angle-Side (SAS) Similarity G.SRT.3 G.SRT.5 Angle-Angle Similarity Side-Side-Side Similarity Included angle Included side Side-Angle-Side Similarity 6.3 Keep It In Proportion s About Proportionality Prove the Angle Bisector/Proportional Side Prove the Triangle Proportionality Prove the Converse of the Triangle Proportionality Prove the Proportional Segments associated with parallel lines. Prove the Triangle Midsegment. G.GPE.7 G.SRT.4 G.SRT.5 Angle Bisector/Proportional Side Triangle Proportionality Converse of the Triangle Proportionality Proportional Segments Triangle Midsegment Geometry: A Common Core Program 11

12 6.4 Geometric Mean More Similar Triangles Explore the relationships created when an altitude is drawn to the hypotenuse of a right triangle. Prove the Right Triangle/Altitude Similarity. Use the geometric mean to solve for unknown lengths. G.SRT.4 G.SRT.5 Right Triangle/Altitude Similarity Geometric mean Right Triangle Altitude/Hypotenuse Right Triangle Altitude/Leg Proving the Pythagorean 6.5 Proving the Pythagorean and the Converse of the Pythagorean Prove the Pythagorean using similar triangles. Prove the Converse of the Pythagorean using algebraic reasoning. G.SRT.4 N/A 6.6 Indirect Measurement Application of Similar Triangles Identify similar triangles to calculate indirect measurements. Use proportions to solve for unknown measurements. G.SRT.5 Indirect measurement Geometry: A Common Core Program 12

13 7 Congruence Through Transformations This chapter focuses on proving triangle congruence theorems and using the theorems to determine whether triangles are congruent. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 7.1 Slide, Flip, Turn: The Latest Dance Craze? Translating, Rotating, and Reflecting Geometric Figures Translate geometric figures on a coordinate plane. Rotate geometric figures on a coordinate plane. Reflect geometric figures on a coordinate plane G.CO.2 G.CO.3 G.CO.5 N/A 7.2 All The Same To You Congruent Triangles Identify corresponding sides and corresponding angles of congruent triangles. Explore the relationship between corresponding sides of congruent triangles. Explore the relationship between corresponding angles of congruent triangles. Write congruence statements for congruent triangles. Identify and use rigid motion to create new images. G.CO.6 G.CO.7 G.CO.8 N/A 7.3 Side-Side-Side Side-Side-Side Congruence Explore the Side-Side-Side Congruence through constructions. Explore the Side-Side-Side Congruence on the coordinate plane. Prove the Side-Side-Side Congruence Theorum G.CO.6 G.CO.7 G.CO.8 G.CO.10 G.CO.12 Side-Side-Side Congruence 7.4 Side-Angle-Side Side-Angle-Side Congruence Explore Side-Angle-Side Congruence using constructions. Explore Side-Angle-Side Congruence on the coordinate plane. Prove the Side-Angle-Side Congruence. G.CO.6 G.CO.7 G.CO.8 G.CO.10 G.CO.12 Side-Angle-Side Congruent Geometry: A Common Core Program 13

14 7.5 You Shouldn't Make Assumptions Angle-Side-Angle Congruence Explore the Angle-Side-Angle Congruence using constructions. Explore the Angle-Side-Angle Congruence on the coordinate plane. G.CO.6 G.CO.7 G.CO.8 G.CO.10 G.CO.12 Angle-Side-Angle Congruence 7.6 Ahhhhh... We're Sorry We Didn't Include You Angle-Angle-Side Congruent Explore Angle-Angle-Side Congruence using constructions. Explore Angle-Angle-Side Congruence on the coordinate plane. Prove the Angle-Angle-Side Congruence. G.CO.6 G.CO.7 G.CO.8 G.CO.10 G.CO.12 Angle-Angle-Side Congruence 7.7 Congruent Triangles in Action Using Congruent Triangles Prove that the points on a perpendicular bisector of a line segment are equidistant to the endpoints of the line segment. Show that AAA for congruent triangles does not work. Show that SSA for congruent triangles fors not work. Use the congruence theorems to determine triangle congruency. G.CO.6 G.CO.7 G.CO.8 G.CO.9 G.CO.12 N/A Geometry: A Common Core Program 14

15 8 Using Congruence s This chapter covers triangle congruence, including right triangle and isosceles triangle congruence theorems. Lessons provide opportunities for students to explore the congruence of corresponding parts of congruent triangles as well as continuing work with proof, introducing indirect proof, or proof by contradiction. Throughout, students apply congruence theorems to solve problems. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 8.1 Time to Get Right Right Triangle Congruency s Prove the Hypotenuse-Leg Congruence using a two-column proof and construction. Prove the Leg-Leg, Hypotenuse-Angle, and Leg-Angle Congruence s by relating them to general triangle congruence theorems. Apply right triangle congruence theorems. G.CO.6 G.CO.7 G.CO.8 G.CO.10 G.CO.12 Hypotenuse-Leg (HL) Congruence Leg-Leg (LL) Congruence Hypotenuse-Angle (HA) Congruence Leg-Angle (LA) Congruence 8.2 CPCTC Corresponding Parts of Congruent Triangles are Congruent Identify corresponding parts of congruent triangles. Use corresponding parts of congrent triangles are congruent to prove angles and segments are congruent. Use corresponding parts of congruent triangles are congruent to prove the Isosceles Triangle Base Angle. Use corresponding parts of congruent triangles are congruent or prove the Isosceles Triangle Base Angle Converse. Apply corresponding parts of congruent triangles. G.CO.10 Corresponding parts of congruent triangles are congruent (CPCTC) Isosceles Triangle Base Angle IsoscelesTriangle Base Angle Converse 8.3 Congruence s in Action Isosceles Triangle s Prove the Isosceles Triangle Base. Prove the Isosceles Triangle Vertex Angle. Prove the Isosceles Triangle Perpendicular Bisector. Prove the Isosceles Triangle Altitude to Congruent Sides. Prove the Isosceles Triangle Angle Bisector to Congruent Side. G.CO.10 Vertex angle Isosceles Triangle Base Isosceles Triangle Vertex Angle Isosceles Triangle Perpendicular Bisector Isosceles Triangle Altitude to Congruent Sides Isosceles Triangle Angle Bisector to Congruent Sides Geometry: A Common Core Program 15

16 8.4 Making Some Assumptions Inverse, Contrapositive, Direct Proof, and Indirect Proof Write the inverse and contrapositive of a conditional statement. Differentiate between direct and indirect proof. Use indirect proof. G.CO.10 Inverse Contrapositive Direct proof Indirect proof or proof by contradiction Hinge Hinge Converse Geometry: A Common Core Program 16

17 9 Trigonometry This chapter introduces students to trigonometric ratios using right triangles. Lessons provide opportunities for students to discover and analyze these ratios and solve application problems using them. Students also explore the reciprocals of the basic trigonometric ratios sine, cosine, and tangent, along with their inverses to determine unknown angle measures. Deriving the Law of Sines and the Law of Cosines extends students understanding of trigonometry to apply to all triangles. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 9.1 Three Angles Measure Introduction to Trigonometry Explore trigonometric ratios as measurement conversions. Analyze the properties of similar right triangles. G.SRT.3 G.SRT.5 G.SRT.6 Reference angle Opposite side Adgacent side 9.2 The Tangent Ratio Tangent Ratio, Cotangent Ratio, and Inverse Tangent Use the tangent ratio in a right triangle to solve for unknown side lengths. Use the cotangent ratio in a right triangle to solve for unknown side lengths. Relate the tangent ratio to the cotangent ratio. Use the inverse tangent in a right triangle to solve for unknown angle measures. G.SRT3 G.SRT.5 G.SRT.6 G.SRT.8 Rationalizing the denominator Tangent (tan) Cotangent (cot) Inverse tangent 9.3 The Sine Ratio Sine Ratio, Cosecant Ratio, and Inverse Sine Use the sine ratio in a right triangle to solve for unknown side lengths. Use the cosecant ratio in a right triangle to solve for unknown side lengths. Relate the sine ratio to the cosecant ratio. Use the inverse sine in a right triangle to solve for unknown angle measures. G.SRT.8 Sine (sin) Cosecant (csc) Inverse sine 9.4 The Cosine Ratio Consine Ratio, Secant Ratio, and Inverse Cosine Use the cosine ratio in a right triangle to solve for unknown side lengths. Use the secant ratio in a right triangle to solve for unknown side lengths. Relate the cosine ratio to the secant ratio. Use the inverse cosine in a right triangle to solve for unknown angle measures. G.SRT.8 Cosine (cos) Secant (sec) Inverse cosine Geometry: A Common Core Program 17

18 9.5 We Compliment Each Other! Complement Angle Relationships Explore complement angle relationships in a right triangle. Solve problems using complement angle relationships. G.SRT.7 G.SRT.8 N/A 9.6 Time to Derive! Deriving the Triangle Area Formula, the Law of Sines, and the Law of Cosines Derive the formula for the area of a triangle using the sine function. Derive the Law of Sines. Derive the Law of Cosines. G.SRT.9 G.SRT.10 G.SRT.11 Law of Sines Law of Cosines Geometry: A Common Core Program 18

19 10 Properties of Quadrilaterals This chapter focuses on properties of squares, rectangles, parallelograms, rhombi, kites, and trapezoids. The sum of interior and exterior angles of polygons is also included. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 10.1 Squares and Rectangles Properties of Squares and Rectangles Prove the Perpendicular/Parallel Line. Construct a square and a rectangle Determine the properties of a square and rectangle. Prove the properties of a square and a rectangle. Solve problems using the properties of a square and a rectangle. G.CO.11 G.CO.12 G.SRT.8 G.GPE.5 Perpendicular/Parallel Line 10.2 Parallelograms and Rhombi Properties of Parallelograms and Rhombi Construct a parallelogram. Construct a rhombus. Prove the properties of a parallelogram. Prove the properties of a rhombus. Solve problems using the properties of a parallelogram and a rhombus. G.CO.11 G.CO.12 G.GPE.5 Parallelogram/Congruent-Parallel Side 10.3 Kites and Trapezoids Properties of Kites and Trapezoids Construct a kite and a trapezoid. Determine the properties of a kite and a trapezoid. Prove the properties of a kites and trapezoids. Solve problems using the properties of kites and trapezoids. G.CO.11 G.SRT.8 G.GPE.5 G.CO.12 Base angles of a trapezoid Isosceles trapezoid Biconditional statement Midsegment Trapezoid Midsegment Geometry: A Common Core Program 19

20 10.4 Interior Angles of a Polygon Sum of the Interior Angle Measures of a Polygon Write the formula for the sum of the measures of the interior angles of any polygon. Calculate the sum of the measures of the interior angles of any polygon, given the number of sides. Calculate the number of sides of a polygon, given the sum of the measures of the interior angles. Write a formula for the measure of each interior angle of any regular polygon. Calculate the measure of an interior angle of a regular polygon, given the number of sides. Calculate the number of sides of a regular polygon, given the sum of the measures of the interior angles. G.CO.9 G.SRT.8 Interior angle of a polygon 10.5 Exterior and Interior Angle Measurement Interactions Sum of the Exterior Angle Measures of a Polygon Write the formula for the sum of the exterior angles of any polygon. Calculate the sum of the exterior angles of any polygon, given the number of sides. Write a formula for the measure of each exterior angle of any regular polygon. Calculate the measure of an exterior angle of a regular polygon, given the number of sides. Calculate the number of sides of a regular polygon, given measures of each exterior angle. G.CO.9 G.CO.12 G.SRT.8 Exterior angle of a polygon 10.6 Quadrilateral Family Categorizing Quadrilaterals Based on Their Properties List the properties of various quadrilaterals. Categorize quadrilaterals based upon their properties. Construct quadrilaterals given a diagonal. G.CO.12 N/A 10.7 Name That Quadrilateral Classifying Quadrilaterals on the Coordinate Plane Determine the coordinates of the fourth vertex, given the coordinates of three vertices and a description of the quadrilateral. Classify a quadrilateral given the location of its vertices on a coordinate plane. G.GPE.4 G.GPE.5 G.MG.3 N/A Geometry: A Common Core Program 20

21 11 Circles This chapter reviews information about circles, and then focuses on angles and arcs related to a circle, chords, and tangents. Several theorems related to circles are proven throughout the chapter. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 11.1 Riding a Ferris Wheel Introduction to Circles Review the definition of line segments related to a circle such as chord, secant, and tangent. Review the definitions of points related to a circle such as center and point of tangency. Review the definitions of angles related to a circle such as central angle and inscribed angle. Review the definitions of arcs related to a circle such as major arc, minor arc, and semicircle. Prove all circles are similar using rigid motion. G.CO.1 G.C.1 G.C.2 Center of a circle Radius Chord Diameter Secant of a circle Tangent of a circle Point of tangency Central angle Inscribed angle Arc Major arc Minor arc Semicircle 11.2 Take the Wheel Central Angles, Inscribed Angles, and Intercepted Arcs Determine the measure of various arcs. Use the Arc Addition Postulate. Determine the measure of central angles and inscribed angles. Prove the Inscribed Angle theorem. Prove the Parallel Lines Congruent Arcs. G.CO.1 G.C.2 Degree measure of an arc Adjacent arcs Arc Addition Postulate Intercepted arc Inscribed Angle Parallel Lines-Congruent Arc 11.3 Manhole Covers Measuring Angles Inside and Outside of Circles Determine the measures of angles formed by two chords. Determine the measure of angles formed by two secants. Determine the measure of angles formed by a tangent and a secant. Determine the measure of the angles formed by two tangents. Prove the Interior Angles of a Circle. Prove the Exterior Angles of a Circle. Prove the Tangent to a Circle. G.C.2 Interior Angles of a Circle Exterior Angles of a Circle Tangent to a Circle Geometry: A Common Core Program 21

22 11.4 Color Theory Chords Determine the relationships between a chord and a diameter of a circle. Determine the relationships between congruent chords and their minor arcs. Prove the Diameter-Chord. Prove the Equidistant Chord. Prove the Equidistant Chord Converse. Prove the Congruent Chord-Congruent Arc. Prove the Congruent Chord-Congruent Arc Converse. Prove the Segment-Chord. G.C.2 Diameter-Chord Equidistant Chord Equidistant Chord Converse Congruent Chord-Congruent Arc Congruent Chord-Congruent Arc Converse Segments of a chord Segment-Chord 11.5 Solar Eclipses Tangents and Secants Determine the relationship between a tangent line and a radius. Determine the relationshop between congruent tangent segments. Prove the Tangent Segment. Prove the Secant Segment. Prove the Secant Tangent. G.C.4 Tangent segment Tangent Segment Secant segment External secant segment Secant Segment Secant Tangent Geometry: A Common Core Program 22

24 12.4 Circle K. Excellent! Circle Problems Use formulas associated with circles to solve problems. Use theorems associated with circles to solve problems. Use angular velocity and linear velocity to solve problems. G.MG.3 Linear velocity Angular velocity Geometry: A Common Core Program 24

25 13 Circles and Parabolas This chapter explores circles, polygons, and parabolas on the coordinate plane. Key characteristics are used to write equations for these geometric figures. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 13.1 The Coordinate Plane Circles and Polygons on the Coordinate Plane Apply theorems to circles in a coordinate plane. Classify polygons on the coordinate plane. Use midpoints to determine characteristics of polygons. Distinguish between showing something is true under certain conditions, and proving it is always true. G.GPE.4 G.GPE.5 N/A 13.2 Bring On The Algeba Derive the Equation for a Circle Use the Pythagorean to derive the equation of a circle given the center and radius. Distinguish between the equation of a circle written in general form and the equation of a circle written in standard form (center-radius form) Complete the square to determine the center and radius of a circle. G.GPE.1 G.SRT.8 N/S 13.3 Is That Point on the Circle? Determining Points on a Circle Use the Pythagorean to determine if a point lies on a circle on the coordinate plane given the circle s center at the origin, the radius of the circle, and the coordinates of the point. Use the Pythagorean to determine if a point lies on a circle on the coordinate plane given the circle s center not at the origin, the radius of the circle, and the coordinates of the point. Use rigid motion to transform a circle about the coordinate plane to determine if a point lies on a circle s image given the pre-image s center, radius, and the coordinates of the point. Determine the coordinate of a point that lies on a circle given the location of the center point and the radius of the circle. Use the Pythagorean to determine the coordinates of a point that lies on a circle. G.SRT.8 G.GPE.4 N/A 13.4 The Parabola Equation of a Parabola Derive the equation of a parabola given the focus and directix. G.GPE.2 Locus of points Parabola Focus on a parabola Directrix of a parabola General form of a parabola Standard form of a parabola Axis of summetry Vertex of a parabola Concavity Geometry: A Common Core Program 25

26 13.5 Simply Parabolic More with Parabolas Solve problems using characteristics of parabolas. G.GPE.2 N/A Geometry: A Common Core Program 26

27 14 Probability This chapter investigates compound probability with an emphasis toward modeling and analyzing sample spaces to determine rules for calculating probabilities in different situations. Students explore various probability models and calculate compound probabilities with independent and dependent events in a variety of problem situations. Students use technology to run experimental probability simulations. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 14.1 These Are a Few of My Favorite Things Modeling Probability List the sample space for situations involving probability. Construct a probability model for a situation. Differentiate between uniform and non-uniform probability models. S.CP.1 Outcome Sample space Event Probability Probability model Uniform probability model Complement of an event Non-uniform probability model 14.2 It's in the Cards Compound Sample Spaces Develop a rule to determine the total number of outcomes in a sample space without listing each event. Classify events as independent or dependent. Use the Counting Principle to calculate the size of sample spaces. S.CP.1 Tree diagram Organized list Set Element Disjoint sets Intersecting sets Independent events Dependent events Counting Principle 14.3 And? Compound Probability with "And" Determine the probability of two or more independent events. Determine the probability of two or more dependent events. S.CP.2 S.CP.8 Compound event Rule of Compound Probability involving "and" 14.4 Or? Compound Probability with "Or" Determine the probability of one or another independent events. Determine the probability of one or another dependent events. S.CP.7 Addition Rule for Probability Geometry: A Common Core Program 27

28 14.5 And, Or, and More! Calculating Compound Probability Calculate compound probabilities with and without replacement. S.CP.2 S.CP.8 N/A 14.6 Do You Have a Better Chance of Winning the Lottery or Getting Struck by Lightning? Investigate Magnitude through Theoretical Probability and Experimantal Probability Simulate events using the random number generator on a graphing calculator. Compare experimental and theoretical probability. S.IC.2 Simulation Theoretical probability Experimental probability Geometry: A Common Core Program 28

29 15 More Probability and Counting This chapter addresses more compound probability concepts and more counting strategies. Compound probability concepts are presented using two-way frequency tables, conditional probability, and independent trials. The counting strategies include permutations, permutations with repetition, circular permutations, and combinations. The last lesson focuses on geometric probability and expected value. Modules Worked Examples Peer Analysis Talk the Talk Technology Chapter Lesson Title Key Math Objective CCSS Key Terms 15.1 Left, Left, Left, Right, Left Compound Probability for Data Displayed in Two-Way Tables Determine probabilities of compound events for data displayed in two-way tables. Determine relative frequencies of events. S.CP.4 Two-way table Frequency table Two-way frequency table Contingency table Catagorical data Qualitative data Relative frequency Two-way relative frequency table 15.2 It All Depends Conditional Probability Use conditional probability to determine the probability of an event given that another event has occurred. Use conditional probability to determine whether or not events are independent. S.CP.3 S.CP.5 S.CP.6 Conditional probability 15.3 Counting Permutations and Combinations Use permutations to calculate the size of sample spaces. Use combinations to calculate the size of sample spaces. Use permutations to calculate probabilities. Use combinations to calculate probabilities. Calculate permutations with repeated elements. Calculate circular permutations. S.CP.9 Factorial Permutation Circular permutation Combination Geometry: A Common Core Program 29

30 15.4 Trials Independent Trials Calculate the probability of two trials of two independent events. Calculate the probability of multiple trials of two independent events. Determine the formula for calculating the probability of multiple trials of independent events. S.CP.9 N/A 15.5 To Spin or Not to Spin Expected Value Determine geometric probability. Calculate the expected value of an event. S.MD.6 S.MD.7 Geometric probability Expected value Geometry: A Common Core Program 30

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