Solving Problems with Similar & Congruent Triangles

Explanation

Combined problems use:

• Congruent triangles → equal sides and angles

• Similar triangles → proportional sides

Steps:

1. Identify similar or congruent triangles

2. Use congruence for exact side/angle values

3. Use similarity for proportions to solve unknowns

Example: ΔABC ≅ ΔDEF → AB = DE. ΔXYZ ~ ΔPQR → XY / PQ = XZ / PR → solve unknown.