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Name: _______________________________ Period: ______ Geometry Chapter 4 Test – Version A Multiple Choice Identify the choice that best completes the statement or answers the question. ____ A 1. In the triangles below (∆ABC and ∆FED), find m B E D C , given , , and m F a. m b. m c. m d. m ____ 2. Two Seyfert galaxies, BW Tauri and M77, represented by points A and B, are the same distance from Earth, represented by point C (so CA = CB). What is m ? C 115° A a. m b. m B D = = c. m d. m = = ____ 3. Given: Identify all pairs of congruent corresponding parts. A M B a. b. c. d. C , , , , O N , , , , , , , , , , , , , , , , . ____ 4. What additional information do you need to prove by the SAS Postulate? a. b. C B c. d. D A ____ 5. Given the lengths marked on the figure and that bisects , use SSS to explain why . 4 cm E A 3 cm 3 cm D 4 cm C B a. b. c. The triangles are not congruent. d. ____ 6. Daphne folded a triangular sheet of paper into the shape shown. Find , and m . a. b. E = = c. d. , given , = = D C A 42º 61º ____ 22º 7. B Determine if you can use ASA to prove . Explain. E a. A B || C || D is given. because both are right angles. By the Vertical Angles Theorem, . Therefore, by SAS. b. is given. because both are right angles. No other congruence relationships can be determined, so ASA cannot be applied. c. is given. because both are right angles. By the Adjacent Angles Theorem, . Therefore, by ASA. d. is given. because both are right angles. By the Vertical Angles Theorem, . Therefore, by ASA. ____ 8. supports it. For these triangles, select the triangle congruence statement and the postulate or theorem that L a. b. J , SAS , HL c. d. , SAS , HL K B A C ____ 9. Find the measure of each numbered angle. > | | 3 1 117 a. b. c. d. 2 m m m m = = = = > ,m ,m ,m ,m = = = = ,m ,m ,m ,m = = = = ____ 10. One of the acute angles in a right triangle has a measure of acute angle? a. c. b. d. ____ 11. Classify by its angle measures, given m ,m . What is the measure of the other , and m . D 25º 60º A 75º B a. right triangle b. equiangular triangle C c. acute triangle d. obtuse triangle 12. Find the value of x if the triangle is an equiangular, equilateral triangle. (3x + 6) o 13. An isosceles triangle has a perimeter of 54 cm. The congruent sides measure (2x + 3) cm. The length of the third side is 4x cm. What is the value of x? Given: CBA CDA , 14. bisects Prove: B C A D Complete the proof. Statements 1. CBA CDA, bisects Reasons 1. Given 2. BAC DAC 2. 3. 3. Reflexive Property of Congruence 4. 4. 5. 5. Find 15. . is an isosceles triangle. is the longest side with length . = and = 7 x+ 3 A B 2 x +8 3 x+ 6 C 5 2x + 3x 1 16. What congruence postulate proves that these triangles are congruent? Then, find the value of x. . 17. Given: P is the midpoint of Prove: T and . R P S Q Complete the proof. Proof: Statements 1. P is the midpoint of 2. Reasons and 1. Given . 2. , 3. 3. Vertical Angles Theorem 4. 4. 18. Show for 6a - 2 A . D a+7 4a - 2 B C 16 19. The figure shows part of the roof structure of a house. Use SAS to explain why R S || T || U Statements 1. RT SU, T is the midpoint of SU 2. and are right angles 3. Reasons 1. Given 2. 3. Right Angle Congruence Theorem 4. ST UT 4. 5. RT RT 5. 6. 6. . 20. Find . ( L (4x + 7)º (6x - 9)º 118º K M 21. N Given that and m = 34º, find m . E 34º A D C B 22. Tom is wearing his favorite bow tie to the school dance. The bow tie is in the shape of two triangles. Given: , , , Prove: B D C A E Complete the proof. Proof: 1. 2. 3. , Statements , Reasons 1. Given 2. Given 3. 4. 4. 5. 5. Definition of congruent triangles Name: _______________________________ Period: ______ Geometry Chapter 4 Test Answer Sheet VERSION: A TEST NUMBER: ____ For #1 – 11, write the LETTER of your answer choice only. 1. 7. 2. 8. 3. 9. 4. 10. 5. 11. 6. 12. x = ______ 13. x = ______ 14. Statements 1. CBA CDA, bisects 1. Given Reasons 2. BAC DAC 2. 3. 3. Reflexive Property of Congruence 4. 4. 5. 5. 15. AB = __________ 16. Congruence postulate: ___________ x = ______ 17. Statements 1. P is the midpoint of 2. and Reasons . 1. Given 2. , 3. 3. Vertical Angles Theorem 4. 4. 18. 19. Statements 1. RT SU, T is the midpoint of SU 2. and are right angles 3. Reasons 1. Given 2. 3. Right Angle Congruence Theorem 4. ST UT 4. 5. RT RT 5. 6. 6. 20. . = ________ 21. m .= __________ 22. 1. 2. 3. , Statements , Reasons 1. Given 2. Given 3. 4. 4. 5. 5. Definition of congruent triangles