1. Paper!! Pencil!!! Calculator!!!
Congruent Triangles
Paper!! Pencil!!! Calculator!!!

2. New Vocab…
Corresponding angles and corresponding sides are in the same position in polygons with an equal number of sides.
Two polygons are congruent polygons if and only if their corresponding sides are congruent.

3. Congruent Triangles

4. Example Given: ∆PQR  ∆STW
Identify all pairs of corresponding congruent parts.

5. Example
Given: ∆ABC  ∆DBC.
Find the value of x.
Find mDBC.

6. Proof Example Given: AD bisects BE. BE bisects AD. AB  DE, A  D
Write the Proof on the board!!
Given: AD bisects BE.
BE bisects AD.
AB  DE, A  D
Prove: ∆ABC  ∆DEC

7. Assignment
Pg. 234 #4-10 even, even, 32, 34