Question

Prove that the exterior angle of a triangle is equal to the sum of the two interior opposite angles.

Answer 1

Step-by-step explanation:

An exterior angle of a triangle is equal to the sum of the opposite interior angles. In simpler way, as any angle of equivalent triangle is 60′, the exterior angle would be 120′. The sum of all exterior angles would be 120+120+120 which is equal to 360′.