2.8. Two-Column Proofs http://www.ck12.org
- 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, there are graphing calculator activities designed to
supplement the objectives for some of the lessons in this chapter. See