1. Warm-Up (#33 p.191)

2. 4.3 Triangle Congruence by ASA and AAS

3. Learning Target I can show two triangles are congruent using AAS or ASA

4. Vocabulary Angle Side Angle (ASA) : If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.

5. ASA Example PMO ≅ NMO

6. Vocabulary Angle Angle Side (AAS): If two angles and a non included side are congruent to two angles and the corresponding non included side, then the triangles are congruent.

7. AAS Example WVY ≅ ZVY

8. Practice On your 4-3 worksheet, lets do problems 1-9

9. Practice On your 4-3 worksheet, lets do problems 12-14

10. Practice Together Proofs – #10 and #11 on your 4- 3 worksheet together

11. Recap Questions Do you know what AAS and ASA mean? Do you know how to prove two triangles congruent using AAS or ASA? Do you remember SAS and SSS? Can you provide reasoning in a proof? CHALLENGE: Can you write a proof?

12. Homework p. 197 – 198 #1-18 all HEADS UP: There will be a quiz this Thursday on 4.1 – 4.3