Question

Q.1) Which one of the following cannot be the measure of three angles of a triangle?
(a) ∠A = 60°, ∠B = 60°, ∠C = 60°
(b) ∠A = 70°, ∠B = 20°, ∠C = 90°
(c) ∠A = 90°, ∠B = 45°, ∠C = 55°
(d) ∠A = 72°, ∠B = 30°, ∠C = 78°

Answer 1

Answer:

I think b.......,.....