1. 4-2 Triangle Congruence by SSS & SAS
11/18
4-2 Triangle Congruence by SSS & SAS
Objective: To Determine whether triangles are congruent using SSS and SAS postulate

2. What can you conclude from each diagram
Warm up:
What can you conclude from each diagram

3. Discovery Time! Quickly & Quietly Get into groups of 3
Person 1: Make a triangle with lengths 2, 3, 4 in.
Person 2: Make a triangle with lengths 3, 4, 5 in.
Group: Walk around and observe same triangles made by other groups
Person 3: Record what observations your group have made

4. SSS postulate
If 3 Corresponding Sides are congruent, then the triangles are congruent.

5. Ex 1:

6. SAS Postulate:
If two corresponding sides and the included angle are congruent then the triangles are congruent.

7. Ex 2:
From the info give, can you prove
Explain.

8. Ex 3:

9. Ex 4:

10. Ex 5:

11. Homework Pg
2-30 evens
Omit 6,