Question

17. ∆ DEF ~ ∆ LMN, ∠D = 60°, ∠N = 50°, then ∠E=
(A) 70°
(B) 30°
(C) 120°
(D) 40°

can any answer this step by step​

Answer 1

Answer

Correct option is

C

70∘

In △LMN

∠L+∠M+∠N=180∘60∘+50∘+∠N=180∘⇒∠N=70∘

Now ,

△LMN∼△PQR∴∠R=∠N⇒∠N=70∘