1. Bellringer If P is the centroid, solve for x, y and z if CD =24. A x D10
2x-4 P B C F

2. Proving Congruence – ASA, AAS
Chapter 5.3

3. ASA Postulate

5. Use ASA in proofs
Statements Reasons

6. AAS Theorem

7. AAS Postulate
Angle-Angle-Side Congruence If two angles and a non included side of one triangle are congruent to the corresponding two angles and side of a second triangle then the triangles are congruent

8. Use AAS in proofs
Given:
Prove:
Statements Reasons

10. HL Postulate

11. HL Example
Statements Reasons
Angle RVS is right

12. Example
Statements Reasons

13. Example Given: Prove: Statements Reasons Given: QP is parallel to SR
Prove: QR is congruent to PS

14. CPTCP

15. Classwork/Homework
Pg 253 #1-26