Question

In Fig., line l || m and m|| n, find out ∠1 , ∠2 , ∠3 and ∠4. Give reasons

Answer 1

∠4 + 60° = 180° (Supplementary angles)

∠4 = 120°

∠1 = ∠4 (Corresponding angles)

∠1 = 120°

∠2 = ∠1 (Corresponding angles)

∠2 = 120°

∠3 = ∠2 (Vertically opposite angles)

∠3 = 120°