Name _______________________________________________ Date ___________________________

I can analyze and apply properties of triangle congruence and polygons.

Essential question:

What can you conclude about two triangles when you know that two pairs of corresponding

sides and the corresponding included angles are congruent?

Using the side-angle-side congruence theorem

Example 1: Using the SAS Congruence Theorem

Unit 6 - Congruent Triangles Investigation 2: Triangle Congruency

Lesson 1: Proving Triangle Congruence by SAS

Example 2: Using SAS and Properties of Shapes

Example 3: Solving Real-Life Problems

You are making a canvas sign to hand on the triangular

portion of the barn wall shown in the picture. You think

you can use two identical triangular sheets of canvas.

You know that RP ⊥ QS and PQ ≅ PS. Use the SAS

Congruence Theorem to show that ∆PQR ≅ ∆PSR.