Question

Find all the angles of the given diagrams

Answer 1

(i)

Angles of the triangle are 70°, 35°, 75°

Exterior angles are 35°, 110°, 105°

(ii)

Angles of the quadrilateral are

∠C = 85°, ∠B = 85°, ∠A = 100°, ∠D = 90°

Exterior angles are 95°, 80°, 90°, 95°

All angles at D are 90°

Angles at C are 85°, 95°, 85°, 95°

(iii)

Angles of the quadrilateral are : 

∠A = 65°, ∠B = 75s°, ∠C = 100°, ∠D = 120° 

Exterior angles are 115°, 105°, 80°, 60° 

Angles at C are 100°, 80°, 100°, 80°