Triangle Similarity Introduction Activity Which triangles are similar to ∆A? Discuss with your partner, which triangles are similar to ∆A. How do you know? 80° A 50° 50° 50° 50° 80° B C 50° 50° 80° 80° 50° D E 50° 50° 50° 40° 80° 50° F G 50° 70° 70° 80°