MAHARASHTRA Class 10: Tests of Similarity of Triangles Videos | Criteria for similarity of triangles

If two triangles are similar by the SSS test of similarity, then their corresponding angles are equal.

If two triangles have their corresponding angles congruent, then they are similar by the AAA test.

If two triangles are similar, then their corresponding sides are proportional.

If two triangles are similar, then their corresponding angles are equal.

In ∆ABC, ∠A = 40^o and ∠B = 50^o

So ∠C = 90^o Also,∆ABC and ∆XYZ are similar,

so ∠C = ∠Z = 90^o.