1. TODAY IN GEOMETRY…  REVIEW: SSS, SAS, HL, ASA, AAS  WARM UP: PROOF-A-RAMA 1  Learning Goal: 4.6 Use CPCTC to prove congruent parts of a triangle  Independent practice  AT: PROOF-A-RAMA 1 must be turned in!

2. PRACTICE: Find all 6 corresponding parts

3. PRACTICE: Which postulate would you use to state that the triangles are congruent. Then tell which triangles are congruent. ORDER MATTERS: When writing congruent triangles, make sure all angles and sides correspond!

4. CPCTC: Corresponding parts of congruent triangles are congruent.

5. Using CPCTC in proofs: We use CPCTC to prove that parts of a triangle are congruent. We MUST PROVE TRIANGLES ARE CONGRUENT FIRST!

6. 1.USE one postulate to prove triangles are congruent. 2.What other information do I need? 3.What are the congruent triangles? 4.Use CPCTC

7. STATEMENT REASON 1. Given 2. Reflexive Property 3. AAS 4. CPCTC *we’re proving congruent sides!!!!-use CPCTC

8. STATEMENT REASON 1. Given 2. Definition of bisector 4. SAS 5. CPCTC 3. Reflexive Property *we’re proving congruent sides!!!!-use CPCTC

9. HOMEWORK #7: Pg. 259: 3-8, 10, 11, 21 If finished, work on other assignments: HW #1: 221: 1-26, 32, 35-37 HW #2: Pg. 228: 3-10, 15-16, 19-21 Pg. 231: 33-40 HW #3: Pg. 236: 5, 7, 9-12, 24, 26 (Graph paper needed) HW #4: Pg. 243: 3-15, 20-22, 25-27, 35-37 HW #5: Pg. 252: 3-5, 8-13, 18-20, 33, 34, 36-43 HW #6: Proof-A-Rama 1