1. DO NOW

5. Properties Quiz

7. Given
Subtraction property of equality
Addition property of equality
Division property of equality
Symmetric Property

8. Given: a + c = 2b c = b Prove: a = b STATEMENTS REASONS 1.) a + c = 2b
3.) a + b =2b
3.) substitution
4.) a = b
4.) subtraction property of equality

9. m + n = p Given m = n Given n +n = p Substitution 2n = p Addition
STATEMENTS
REASONS
1.)
2.)
3.)
4.)
5.)
6.)
m + n = p
Given
m = n
Given
n +n = p
Substitution
2n = p
Addition
P = 3r
Given
3r = 2n
Transitive Property

10. This proof has a step missing. Can you find and justify it?
Given
Congruent figures have equal measures
Addition Property of equality
Segment Addition Property
Transitive Property
Congruent figures have equal measures
This proof has a step missing.
Can you find and justify it?

11. Be sure to justify EVERY step!
You try the
next three proofs!
Be sure to justify EVERY step!