1. 4.4 Prove Triangle Congruence

2. Vocabulary
Review Words: Congruent Figures Corresponding Parts

4. Example 1: Prove With SSS

5. Example 1 Practice
1. Yes; SSS No 3 does not equal Yes, SSS

6. Example 2: Standardized Test Practice
Answer: A

7. Example 3
Determine if the triangles are congruent. Triangle ABC: A(-2, -2), B(4, -2), C(4, 6) Triangle DEF: D(5, 7), E(5, 1), F(13, 1)
Use distance formula
Yes they are congruent

8. Example 4 Determine if the figures are stable.
No, there is not Yes stable No, the bottom is
A diagonal support no stable

9. Homework
Pg 234 #1, 3, 5, 7, 9, 11, 13, 14, 16, 17, 19, 21, , 26