# GEOMETRY (Common Core)

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2 Part I Answer all 24 questions in this part. Each correct answer will receive 2 credits. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For each statement or question, choose the word or expression that, of those given, best completes the statement or answers the question. [48] 1 Which object is formed when right triangle RST shown below is rotated around leg RS? Use this space for computations. R S T (1) a pyramid with a square base (3) a right triangle (2) an isosceles triangle (4) a cone 2 The vertices of JKL have coordinates J(5,1), K( 2, 3), and L( 4,1). Under which transformation is the image J K L not congruent to JKL? (1) a translation of two units to the right and two units down (2) a counterclockwise rotation of 180 degrees around the origin (3) a reflection over the x-axis (4) a dilation with a scale factor of 2 and centered at the origin 3 The center of circle Q has coordinates (3, 2). If circle Q passes through R(7,1), what is the length of its diameter? (1) 50 (3) 10 (2) 25 (4) 5 Geometry (Common Core) June 15 [2]

3 4 In the diagram below, congruent figures 1, 2, and 3 are drawn. Use this space for computations. y A A F B F B 2 1 E C E C D D E F x D 3 A C B Which sequence of transformations maps figure 1 onto figure 2 and then figure 2 onto figure 3? (1) a reflection followed by a translation (2) a rotation followed by a translation (3) a translation followed by a reflection (4) a translation followed by a rotation 5 As shown in the diagram below, the angle of elevation from a point on the ground to the top of the tree is 34. If the point is 20 feet from the base of the tree, what is the height of the tree, to the nearest tenth of a foot? (1) 29.7 (3) 13.5 (2) 16.6 (4) 11.2 Geometry (Common Core) June 15 [3] [OVER]

4 6 Which figure can have the same cross section as a sphere? Use this space for computations. (1) (3) (2) (4) 7 A shipping container is in the shape of a right rectangular prism with a length of 12 feet, a width of 8.5 feet, and a height of 4 feet. The container is completely filled with contents that weigh, on average, 0.25 pound per cubic foot. What is the weight, in pounds, of the contents in the container? (1) 1,632 (3) 102 (2) 408 (4) 92 Geometry (Common Core) June 15 [4]

5 8 In the diagram of circle A shown below, chords CD and EF intersect at G, and chords CE and FD are drawn. Use this space for computations. C F G D A E Which statement is not always true? (1) CG FG (3) CE EG FD DG (2) CEG FDG (4) CEG ~ FDG 9 Which equation represents a line that is perpendicular to the line represented by 2x y 7? (1) y 1 2 x 6 (3) y 2x 6 (2) y 1 2 x 6 (4) y 2x 6 Geometry (Common Core) June 15 [5] [OVER]

6 10 Which regular polygon has a minimum rotation of 45 to carry the polygon onto itself? Use this space for computations. (1) octagon (3) hexagon (2) decagon (4) pentagon 11 In the diagram of ADC below, EB DC, AE 9, ED 5, and AB 9.2. A E B 5 D C What is the length of AC, to the nearest tenth? (1) 5.1 (3) 14.3 (2) 5.2 (4) 14.4 Geometry (Common Core) June 15 [6]

7 12 In scalene triangle ABC shown in the diagram below, m C 90. Use this space for computations. A C B Which equation is always true? (1) sin A sin B (3) cos A sin C (2) cos A cos B (4) sin A cos B 13 Quadrilateral ABCD has diagonals AC and BD. Which information is not sufficient to prove ABCD is a parallelogram? (1) AC and BD bisect each other. (2) AB CD and BC AD (3) AB CD and AB CD (4) AB CD and BC AD 14 The equation of a circle is x 2 y 2 6y 7. What are the coordinates of the center and the length of the radius of the circle? (1) center (0,3) and radius 4 (2) center (0, 3) and radius 4 (3) center (0,3) and radius 16 (4) center (0, 3) and radius 16 Geometry (Common Core) June 15 [7] [OVER]

8 15 Triangles ABC and DEF are drawn below. Use this space for computations. C E A B F D If AB 9, BC 15, DE 6, EF 10, and B E, which statement is true? (1) CAB DEF (3) ABC ~ DEF (2) AB FE (4) CB DE AB FE DE CB 16 If ABC is dilated by a scale factor of 3, which statement is true of the image A B C? (1) 3A B AB (3) m A 3(m A) (2) B C 3BC (4) 3(m C ) m C Geometry (Common Core) June 15 [8]

9 17 Steve drew line segments ABCD, EFG, BF, and CF as shown in the diagram below. Scalene BFC is formed. Use this space for computations. A B C D E F G Which statement will allow Steve to prove ABCD EFG? (1) CFG FCB (3) EFB CFB (2) ABF BFC (4) CBF GFC 18 In the diagram below, CD is the image of AB after a dilation of scale factor k with center E. y E C D A x B Which ratio is equal to the scale factor k of the dilation? (1) EC EA (3) (2) BA EA (4) EA BA EA EC Geometry (Common Core) June 15 [9] [OVER]

10 19 A gallon of paint will cover approximately 450 square feet. An artist wants to paint all the outside surfaces of a cube measuring 12 feet on each edge. What is the least number of gallons of paint he must buy to paint the cube? (1) 1 (3) 3 (2) 2 (4) 4 Use this space for computations. 20 In circle O shown below, diameter AC is perpendicular to CD at point C, and chords AB, BC, AE, and CE are drawn. A B D E O C Which statement is not always true? (1) ACB BCD (3) BAC DCB (2) ABC ACD (4) CBA AEC 21 In the diagram below, ABC ~ DEC. A D B C E If AC 12, DC 7, DE 5, and the perimeter of ABC is 30, what is the perimeter of DEC? (1) 12.5 (3) 14.8 (2) 14.0 (4) 17.5 Geometry (Common Core) June 15 [10]

11 22 The line 3y 2x 8 is transformed by a dilation centered at the origin. Which linear equation could be its image? (1) 2x 3y 5 (3) 3x 2y 5 (2) 2x 3y 5 (4) 3x 2y 5 Use this space for computations. 23 A circle with a radius of 5 was divided into 24 congruent sectors. The sectors were then rearranged, as shown in the diagram below. x To the nearest integer, the value of x is (1) 31 (3) 12 (2) 16 (4) Which statement is sufficient evidence that DEF is congruent to ABC? B E C D A F (1) AB DE and BC EF (2) D A, B E, C F (3) There is a sequence of rigid motions that maps AB onto DE, BC onto EF, and AC onto DF. (4) There is a sequence of rigid motions that maps point A onto point D, AB onto DE,and B onto E. Geometry (Common Core) June 15 [11] [OVER]

12 Part II Answer all 7 questions in this part. Each correct answer will receive 2 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [14] 25 Use a compass and straightedge to construct an inscribed square in circle T shown below. [Leave all construction marks.] T Geometry (Common Core) June 15 [12]

13 26 The diagram below shows parallelogram LMNO with diagonal LN, m M 118, and m LNO 22. L M O N Explain why m NLO is 40 degrees. Geometry (Common Core) June 15 [13] [OVER]

14 27 The coordinates of the endpoints of AB are A( 6, 5) and B(4,0). Point P is on AB. Determine and state the coordinates of point P, such that AP:PB is 2:3. [The use of the set of axes below is optional.] y x Geometry (Common Core) June 15 [14]

15 28 The diagram below shows a ramp connecting the ground to a loading platform 4.5 feet above the ground. The ramp measures feet from the ground to the top of the loading platform. Ramp 4.5 ft ft Determine and state, to the nearest degree, the angle of elevation formed by the ramp and the ground. Geometry (Common Core) June 15 [15] [OVER]

16 29 In the diagram below of circle O, the area of the shaded sector AOC is 12π in 2 and the length of OA is 6 inches. Determine and state m AOC. Geometry (Common Core) June 15 [16]

17 30 After a reflection over a line, A B C is the image of ABC. Explain why triangle ABC is congruent to triangle A B C. Geometry (Common Core) June 15 [17] [OVER]

18 31 A flagpole casts a shadow meters long. Tim stands at a distance of meters from the base of the flagpole, such that the end of Tim s shadow meets the end of the flagpole s shadow. If Tim is 1.65 meters tall, determine and state the height of the flagpole to the nearest tenth of a meter. Geometry (Common Core) June 15 [18]

19 Part III Answer all 3 questions in this part. Each correct answer will receive 4 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [12] 32 In the diagram below, EF intersects AB and CD at G and H, respectively, and GI is drawn such that GH IH. E A G B C H I D F If m EGB 50 and m DIG 115, explain why AB CD. Geometry (Common Core) June 15 [19] [OVER]

20 33 Given: Quadrilateral ABCD is a parallelogram with diagonals AC and BD intersecting at E A B E D C Prove: AED CEB Describe a single rigid motion that maps AED onto CEB. Geometry (Common Core) June 15 [20]

21 34 In the diagram below, the line of sight from the park ranger station, P, to the lifeguard chair, L, on the beach of a lake is perpendicular to the path joining the campground, C, and the first aid station, F. The campground is 0.25 mile from the lifeguard chair. The straight paths from both the campground and first aid station to the park ranger station are perpendicular. P Lake 0.55 mi F L 0.25 mi C If the path from the park ranger station to the campground is 0.55 mile, determine and state, to the nearest hundredth of a mile, the distance between the park ranger station and the lifeguard chair. Gerald believes the distance from the first aid station to the campground is at least 1.5 miles. Is Gerald correct? Justify your answer. Geometry (Common Core) June 15 [21] [OVER]

22 Part IV Answer the 2 questions in this part. Each correct answer will receive 6 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [12] 35 The water tower in the picture below is modeled by the two-dimensional figure beside it. The water tower is composed of a hemisphere, a cylinder, and a cone. Let C be the center of the hemisphere and let D be the center of the base of the cone. E F D G 25 ft B C K 8.5 ft A Source: Question 35 is continued on the next page. Geometry (Common Core) June 15 [22]

23 Question 35 continued If AC 8.5 feet, BF 25 feet, and m EFD 47, determine and state, to the nearest cubic foot, the volume of the water tower. The water tower was constructed to hold a maximum of 400,000 pounds of water. If water weighs 62.4 pounds per cubic foot, can the water tower be filled to 85% of its volume and not exceed the weight limit? Justify your answer. Geometry (Common Core) June 15 [23] [OVER]

24 36 In the coordinate plane, the vertices of RST are R(6, 1), S(1, 4), and T( 5,6). Prove that RST is a right triangle. [The use of the set of axes on the next page is optional.] State the coordinates of point P such that quadrilateral RSTP is a rectangle. Question 36 is continued on the next page. Geometry (Common Core) June 15 [24]

25 Question 36 continued Prove that your quadrilateral RSTP is a rectangle. [The use of the set of axes below is optional.] y x Geometry (Common Core) June 15 [25]

26

27 High School Math Reference Sheet Tear Here Tear Here 1 inch 2.54 centimeters 1 kilometer 0.62 mile 1 cup 8 fluid ounces 1 meter inches 1 pound 16 ounces 1 pint 2 cups 1 mile 5280 feet 1 pound kilogram 1 quart 2 pints 1 mile 1760 yards 1 kilogram 2.2 pounds 1 gallon 4 quarts 1 mile kilometers 1 ton 2000 pounds 1 gallon liters 1 liter gallon 1 liter 1000 cubic centimeters 1 Triangle A bh 2 Parallelogram A bh Circle A πr 2 Circle General Prisms Cylinder C πd or C 2πr V Bh V πr 2 h 4 Sphere V πr Cone V πr 2 h 3 1 Pyramid V Bh 3 Pythagorean Theorem Quadratic Formula Arithmetic Sequence Geometric Sequence Geometric Series a 2 b 2 c 2 x b 4ac 2a b 2 a n a 1 (n 1)d a n a 1 r n 1 n a a r 1 1 S n where r 1 1 r 180 Radians 1 radian degrees π π Degrees 1 degree radians 180 Exponential Growth/Decay A A 0 e k(t t 0) B 0 Geometry Common Core June 15 [27]

28 Tear Here Tear Here

29 Tear Here Tear Here Scrap Graph Paper This sheet will not be scored.

30 Scrap Graph Paper This sheet will not be scored. Tear Here Tear Here

31

32 GEOMETRY (COMMON CORE) Printed on Recycled Paper GEOMETRY (COMMON CORE)

### GEOMETRY (Common Core)

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