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Chapter 2 • • • 2 Chapter Test Chapter Test 1. Identify the hypothesis and conclusion: 16. The measure of an angle is 2z. What is the measure of its supplement? 180 2 2z If x + 9 = 11, then x = 2. Hypothesis: x ± 9 ≠ 11 Conclusion: x ≠ 2 17. The measure of an angle is 52 more than the measure 2. Write this statement as a conditional. of its complement. What is the measure of the angle? All babies are cute. 71 If something is a baby, then it is cute. 3. Find a counterexample to show that this statement For each diagram, state two pairs of angles that are is not true. congruent. Justify your answers. 18–19. See back of book. If two angles are complementary, then they are 18. 19. E F Counterexample: two 45° L 62 P not congruent. angles are complementary and congruent. N B C D For each statement, (a) write the converse and (b) decide whether the converse is true or false. V M 4–6. See margin. 4. If a figure is a rectangle, then it has two right angles. 20. Rewrite this biconditional as two conditionals. L3 Ch. 2 Test L2 Adapted Ch. 2 Test L4 Ch. 2 Alternative Assessment L3 Spanish Ch. 2 Test L4 Spanish Ch. 2 Alternative Assessment • L2 Informal Geometry Ch. 2 Test, Forms D & E • ExamView CD-ROM • Ch. 2 Pre-Made Test • Make your own Ch. 2 test • Online Chapter 2 Test at www.PHSchool.com • • A fish is a bluegill if and only if it is a bluish, freshwater sunfish. See back of book. 5. If two lines intersect, then they lie in the same plane. 21. Complete this statement. 6. If it is snowing in South Carolina, then it is not summer. Writing Explain why each statement is not a good definition. 7–9. See margin. 7. A pencil is a writing instrument. 8. Complementary angles are angles that form a right angle. 9. Vertical angles are angles that are congruent. L2 Adapted Chapter Test Chapter Test Name Class L3 Date Chapter Test Form A For Exercises 10–14, name the property that justifies each statement. Trans. Prop. of ≠ or Subst. Prop. 10. If UV = KL and KL = 6, then UV = 6. For each statement, (a) write the converse, and (b) decide whether the converse is true or false. 1. If a polygon is a triangle, then it has three sides. 12. &ABC > &ABC Reflexive Prop. of O For Exercises 4–8, name the property that justifies each statement. 13. If 12 m/D = 45, then m&D = 90. Mult. Prop. of ≠ 4. If m&PHT = 53 and m&JYR = 37, then m&PHT + m&JYR = 90. 5. If XD = FY and FY = 12, then XD = 12. 6. If XY + JM = GT + XY, then JM = GT. 7. If 2(m&ABC) = 180, then m&ABC = 90. B C D 32 O A G E Given: &FED and &DEW are complementary. 15. Find the measure of each angle. Prove: &FEW is a right angle. a. &CDM 135 b. &KDM 135 11. x) (5 (7x) (2x 27) x (3 12. 13. ) 12 c. &JDK 180 d. &JDM 45 K C D B J M e. &CDB 180 f. &CDK 90 (7x 9) (x (4x 5) Geometry Chapter 2 (4x 1) (2x) Form A Test 21 120 4. a. If a figure has two right angles, then it is a rectangle. b. false 120 27. Developing Proof Complete this proof by filling in the blanks. 14. If &DEF > &HJK, then &HJK > &DEF. Symmetric Prop. of O For Exercises 10–13, find the value of the variable in each diagram. 10. 22. People who live in glass houses shouldn’t throw stones. Lindsay shouldn’t throw stones. not possible 23. James wants to be a chemical engineer. If a student wants to be a chemical engineer, that student must graduate from college. James must graduate from college. 24. p S q and q S r are true statements. p S r is true. F D F 7) © Pearson Education, Inc. All rights reserved. 9. Use the diagram at the right to find the measure of each angle. a. &AOF b. &COD c. &EOG d. &BOG e. &BOE f. &FOB For Exercises 22–26, use the Law of Detachment and the Law of Syllogism to make any possible conclusion. Write not possible if you cannot make any conclusion. 26. p S q and q are true statements. not possible 2. If George lives in Texas, then he lives in the United States. 3. If two angles are vertical angles, then they are congruent. If two angles are complements of congruent angles, the angles are 9. congruent 25. p S q and p are true statements. q is true. 11. If m&1 + m&2 = m&4 + m&2, then m&1 = m&4. Subtr. Prop. of ≠ Chapter 2 8. RS = RS PHSchool.com For: Chapter Test Web Code: aua-0252 Chapter 2 Chapter Test 5. a. If two lines lie in the same plane, then they intersect. b. false 6. a. If it is not summer, then it is snowing in South Carolina. E W Proof: By the definition of complementary angles, 27b–d. m&FED + m&DEW = a. 9. 90 See below. m&FED + m&DEW = m&FEW by the b. 9. 90 = m&FEW by the c.9 Property of Equality. Then, &FEW is a right angle, by the d.9. b. Angle Add. Post. c. Subst. Prop. d. def. of right l b. false 7. The definition is not reversible. A pen is a counterexample. 8. The definition is not true. Two nonadjacent angles may be complementary. 9. The definiton is not precise. Any two angles can be congruent.