Question

Can someone please help me find the measure of the exterior angle.

Answer 1

k = 140°

Explanation:

The sum of the interior angles of any triangle = 180°.

64° + 76° + x = 180°

x = 40°

40° + k = 180°

k = 140°

Answer 2

k = 140°

Explanation:

The sum of the interior angles of any triangle = 180°.

64° + 76° + x = 180°

x = 40°

40° + k = 180° because they are supplementary angles

k = 140°