Question

The two interior opposite angles of an exterior angle of a triangle are ${60}^{\circ }$ and ${80}^{\circ }$. Find the measure of the exterior angle.

Answer 1

As we know that the exterior angle of a triangle is equal to the sum of opposite interior angles.
So here, exterior angle $={60}^{\circ }+{80}^{\circ }={140}^{\circ }$