1. Congruence of Triangles 4.1, 4.2, 4.3, 4.5, 4.6
By Brit Caswell

2. 4.1 (The important bit)
You don’t always need to draw the picture!

3. Pg 221 Lesson Check

4. 4 4 8 4 4
Are these triangles
Congruent? 8

6. Pg 229, #3
Would you use SAS, SSS, or neither to prove that these triangle pairs are congruent? A B C D

9. Name two triangles that are congruent by ASA.
Pg 238, #9
Name two triangles that are congruent by ASA.

10. Pg 239, #13

11. To use this theorem, you must meet three conditions:
There are two right triangles.
They have congruent hypotenuses.
There is one pair of congruent legs.

12. You can also think about the converse of this statement:
If two angles (called base angles) of a triangle are congruent,
The sides opposite those angles are congruent. (Thm 4.4)