Question

(Worth 50 points. Don't post your answer unless you have good ideas) Solve the following problem:

Which triangles are similar ?

Answer 1

Answer: ΔABC ≅ ΔADB

Explanation:

In order to be similar, they must have the same angles.

ΔABC ΔADB ΔDBC

∠A = 180 - (2a + b) ∠A = 180 - (2a + b) ∠D = 180 - (a + b)

∠B = a + b ∠D = a + b ∠B = b

∠C = a ∠B = a ∠C = a

ΔABC and ΔADB have the same angles so they are similar.