Question

In each of the given pairs of triangles, find which pair of triangles are similar. State the similarity criterion and write the similarity relation in symbolic form: 

 

Answer 1

In Δ ABC
∠A + ∠𝐵+ ∠𝐶=1800 (Angle Sum Property)
⟹80°+ ∠𝐵+700=180°
⟹ ∠𝐵=30°
∠𝐴= ∠𝑀 𝑎𝑛𝑑 ∠𝐵= ∠𝑁
Therefore, by AA similarity , Δ ABC - Δ MNR