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1 Geometry Semester 1 Review Part 2 Name Show all work for credit. Attach paper as needed to keep work neat & organized. Determine the reflectional (# of lines and draw them in) and rotational symmetry (order and degree) for the following: In the figures at right: m 1 = 45, m 2 = 125, m 3 = 135, m 4 = 45. Determine whether the following is true or false and 4 are supplementary and 4 are supplementary is the supplement or and 4 are congruent and complementary and 3 form a linear pair. 9: Name a set of: vertical angles corresponding angles: Alternate exterior angles: Rewrite each statement in if-then form: 10. Every dog has long fur. 11. People who live in Iowa like corn. 12. Staff members are allowed in the faculty cafeteria. Write the converse, inverse and contrapositive of the following; if possible write the bi-conditional. (Notice that this is a 3-4 part question!) 13. If a number is rational, then it is a real number. 14. If an angle is acute, then it has a measure less than 90 degrees. Determine which of the following are statements: 15. What s your name? 16. Happy New Year 17. Five is an odd number.

2 Write the following using symbolic notation: p = The sun is shining q = It is raining. r = the grass is green 18. If it is raining, then the sun is not shining. 19. It is raining and the grass is green. 20. The grass is green if and only if it is raining and the sun is shining. Determine a valid conclusion that follows from each of the following and whether the Law of Detachment, Law of Syllogism or Law of Contrapositive was used. If false, state the error applied. 21. If you study hard, then you will be popular. a) John studies hard. b) John is popular by: 22. If one is a basketball star, then one is quick. If one is quick, then one is a sprinter. a) Enjoli is a basketball star. b) Enjoli is not a sprinter. by 23. If I am broke, then I will ride the bus. When I ride the bus, then I am late. a) I am out of money. b) I am not broke by Determine whether the following arguments are valid OR invalid; if valid state which law is used. 24. If one is a professor, then one is a college graduate. Sally is a college graduate. Sally is a professor. 25. If one is a professor, then one is a college graduate. Mr. Stuggles is a professor. Mr. Stuggles is a college graduate. 26. If you score at least 90%, then you ll earn an A. If you earn an A, then your parents will be proud. Kelsee has proud parents. Kelsee scored at least 90%.

3 Draw a diagram to solve the following: 27. Betty, Cathy, Isabel, Lani, Alma and Ursula ran an 800m race. Alma beat Isabel by 7m. Betty finished 12m behind Ursula. Alma finished 5m ahead of Lani but 3m behind Ursula. Cathy finished halfway between the first and last person. In what order did they finish? Indicate the order and the distances between each girl. 28. A ball rebounds one-half the height from which it was dropped. The ball is dropped from a height of 160ft. and keeps on bouncing. What is the total vertical distance the ball will travel from the moment it is dropped to the moment it hits the ground for the fifth time? 29. Bob s dad told Bob If you score at least an 85% on your next geometry test, I ll get you a new cell phone. When Lulu saw Bob at school the next week, he had a new cell phone. Is Lulu correct to conclude that Bob must have scored at least 85% on his geometry test? Explain completely. 30. m X + m Y A. 45 o B. 90 o C. 180 o D. Cannot be Determined X Z Y 31. While working on a team quiz, Anna, Bella, and Cortez came across the following problem: Solve for x and then find the measure of each angle. Bella quickly solved the problem and told her team Hey! I got it! m A 93, m B 63, and m C 36. Done! A 3x B 2x + 1 x + 5 C Anna and Cortez are suspicious. Does Bella have the correct answer,or are Anna and Cortez correct to be suspicious? Explain completely. 32. Which of the following can be lengths for a triangle? I. 5, 6, 9 II. 4, 8, 12 III. 7, 8, 17 A. I only B. II only C. III only D. I and II E. I and III 33. If 1 2, which lines are parallel? Q 1 R P 2 S

4 34. For each diagram below, explain what is wrong with each diagram. a. b. c Graph the points R( 2, 2), A( 6, 2), D( 4, 5). a. Translate triangle RAD down 8 and right 6. Label the new triangle with prime notation ( A A' ). Write a lower-case a inside the triangle. b. Rotate triangle RAD 90 clockwise ( ) and label the image with prime notation ( A A"). Write a lower-case b in the triangle. c. Reflect triangle RAD across the x-axis and label the image with prime notation ( A A''' ). Write a lower-case c in the triangle. 36. Solve for x. 2 x For each given set of numbers, determine if a triangle with those side lengths can be made or not. If a triangle can be made, determine if it is a right triangle. Justify your answer! a. 8, 15, 17 b. 8, 12, Find the perimeter and area of each figure.

5 39. Given isosceles triangle ABC with AB = BC. If A = 2x + 10 and B = 6x 20, then C =? A. 18 B. 25 C. 46 D. 52 E. None of these 40. Write each as a conditional statement. a. All Polo shirts have a horse logo. b. A triangle is formed by three segments. c. Linear pairs are supplementary, adjacent angles. d. When you are eighteen you can vote. 41. A counter-example for the statement: If a number is divisible by 3, then it is divisible by How many counter-examples are needed to prove a statement false? 43. Use the following: If today is a good day, then I will ace my final. a) Inverse B) Converse C) Contrapositive D) Bi-conditional 44. The definition of a parallelogram states: If both pairs of opposite sides of a quadrilateral are parallel, then the quadrilateral is a parallelogram. Quadrilateral BERT has both pairs of opposite sides parallel. What conclusion can you make? What type of reasoning did you use? A] BERT is a parallelogram; inductive B] BERT is a rectangle; deductive C] BERT is a rectangle; inductive D] BERT is a parallelogram; deductive 45. A certain triangle has exactly two congruent angles. Which of these conclusions must be true? A] The triangle has no obtuse angles B] Each congruent angle measures 60 degrees C] The triangle is scalene D] The triangle is isosceles 46. Which statement below would have a reason of REFLEXIVE PROPERTY in a proof? A] AB AB B] AB bisects CAR C] ABC CAR D] CAB BAR In the figure, and are opposite rays. and bisects. 47. Which is NOT true about? a. is acute. b. c. Point M lies in the interior of. d. It is an angle bisector.

6 48. Use the diagram to answer the following: a) Are H, G and B coplanar? b) Are A, B, C, and F coplanar? c) Are D, G, F, and H coplanar? d) Name a point NOT coplanar with H, A and D: e) Name DH AC f) Name DH AC g) Name Plane ABC Plane DHC h) Name DH AH i) Name DF AC j) Are D and B collinear? k) Are A, F and C collinear? l) Are A, H and D collinear? m) Which points lie on DG n) Is ACF a right angle? o) Is CF AC? 49. If and, what is? a. 137 b. 4.2 c. 12 d Given point B is in the interior of. Conjecture: a. False; may be obtuse. b. True c. False; just because it is in the interior does not mean it is on the bisecting line. d. False;. 51. Is line a parallel to line b? Justify your answer: a x 35 b 30 x 2 x x 2 x

7 52. Answer the following true/false questions. For each false you should be able to provide a counter-example. a T( x, y) ( x 3, y) is an transformation. b. All mappings are transformations. c. All transformations are mappings. d. When x = 3, f ( x) 3x 1is equal to 10. x = 3 is the input. e. T( x, y) ( x, y 5) is an isometric transformation. f. T( x, y) (2 x,2 y) is an isometric transformation. g. T( x, y) ( x 5, y) is an isometric transformation. h. T( x, y) (3 x, y 2) is an isometric transformation. i. The maximum lines of symmetry of a n sided polygon is n. j. A rectangle has only 2 lines of symmetry. k. A regular hexagon has 5 lines of symmetry. l. Line symmetry and Reflectional symmetry are the same types of symmetry. m. The maximum number of lines of symmetry of a polygon is always found in its regular form. n. If a shape has a rotational order of 1, then it has NO rotational symmetry. o. A rotational symmetry of order 2 means that the angle of the order is 90. p. AB is reflected to AB, ' ' then AA = BB. q. If point A is 2.5 cm from the line of reflection, then AA = 5 cm. r. If line m is the perpendicular bisector of GH, then Rlinem G H s. A rotation of 180 reverses the orientation of the shape. t. If MN is reflected to M' N ', then MN = M N. u. A positive rotation is in the counter clockwise direction. v. When a rotation of 80 about point T is performed, all points in the plane move. w. If a translation maps A (-3,5) to A (3, 5), then T(x,y) > (x 6,y) would be the rule. x. If the translation T(x,y) -----> (x + 3, y 2) produced image A (-1,4), then A (2, 2). z. G( x,y) > (-x,y) is a reflection over the x axis. aa. R (x,y) > (-x,-y) is a reflection over the y = x axis. bb. F (x,y) > (x + 3,y) is a translation of 3 units to the right. cc. W (x,y) > (x 5, 2y) is a translation. dd. A double reflection could either be described as a single translation or a rotation. ee. In doing composite transformations the order that you do them in doesn t matter.

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