2.8. Two-Column Proofs http://www.ck12.org
- Transitive Property of Equality
- Substitution Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality
- Multiplication Property of Equality
- Division Property of Equality
- Distributive Property
- Reflexive Property
- of Congruence
- Symmetric Property
- of Congruence
- Transitive Property of Congruence
Chapter Review
Match the definition or description with the correct word.
- 5=xandy+ 4 =x, then 5=y+4 —A. Law of Contrapositive
- An educated guess —B. Inductive Reasoning
- 6( 2 a+ 1 ) = 12 a+12 —C. Inverse
- 2, 4, 8, 16, 32,... —D. Transitive Property of Equality
5.AB∼=CDandCD∼=AB—E. Counterexample
6.∼p→∼q—F. Conjecture - Conclusions drawn from facts. —G. Deductive Reasoning
- If I study, I will get an “A” on the test. I did not get anA. Therefore, I didn’t study. —H. Distributive Property
9.^6 Aand^6 Bare right angles, therefore^6 A∼=^6 B. —I. Symmetric Property of Congruence - 2 disproves the statement: “All prime numbers are odd.” —J. Right Angle Theorem —K. Definition of Right
Angles
Texas Instruments Resources
In the CK-12 Texas Instruments Geometry FlexBook® resource, there are graphing calculator activities designed
to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9687.