1. Notes 3.1
Congruent Triangles

2. Triangles are congruent if…
Corresponding sides are congruent
Corresponding angles are congruent

4. CPCTC Corresponding Parts of Congruent Triangles are Congruent.
Use CPCTC If two triangles are congruent and you need to give a reason for stating that their corresponding parts are congruent.

5. Given: ∆PQR  ∆STW Name the Corresponding Sides and Angles. P S T Q W

6. Given: ∆PQR  ∆STW (Reason is CPCTC)
CAUTION
Letters must match up EXACTLY!!!
PS QT RW Q W R
Angles ∠ P ≅ ∠ S ∠ Q ≅ ∠ T ∠ R ≅ ∠ W
Sides PQ ≅ ST QR ≅ TW PR ≅ SW