We went through two more CPCTC proofs together today, showing how to work with word definitions in proofs. The students then got started on their review packet for the chapter 4 quiz on Monday.
Assignment: Chapter 4.1 to 4.3 quiz review packet
Review Packet Answers
Some Ways to Prove Triangles Congruent
1. angle U
2. measure of angle D
3. segment SU
4. segment UN
5. triangle NSU
6. triangle EDR
7. triangle FAN
8. angle D; CPCTC
9. segment BA; segment BF
10. SAS
11. ASA
12. none
13. none
14. SSS
15. ASA
16. 1. Given
2. vertical angles are congruent
3. SAS
Using Congruent Triangles
1. 1. given
2. vertical angles congruent
3. SAS
4. CPCTC
2. 1. given
2. if lines parallel, then corr. angles congruent
3. ASA
4. CPCTC
5. if corr. angles congruent, then lines parallel
3. 1. given
2. def. of midpoint
3. reflexive
4. SSS
5. CPCTC
6. def. of angle bisector
Practice 14: Corresponding Parts in Congruence
1. segment OP
2. BI
3. angle O
4. measure of angle G
5. triangle OTP
6. triangle IGB
7. sometimes
8. always
9. never
10. SAS
11. ASA
12. none
13. ASA
14. none
15. SAS
16.
1. M is midpoint of XY 1. given
2. XM congruent to YM 2. def. of midpoint
3. ZM congruent to ZM 3. reflexive
4. XZ congruent to YZ 4. given
5. triangle XMA congruent to tri. YMZ 5. SSS
6. angle XZM congruent angle YZM 6. CPCTC
7. ray ZM bisects angle XZY 7. def. of angle bisector
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