Question

The measure of the exterior angle of the triangle is

Answer 1

139°

Explanation:

By definition, the measure of an exterior angle is the sum of the two interior angles not supplementary to the exterior one.

Here, we see that the two interior angles not supplementary to ∠2 are valued at 75° and 64°, so our exterior angle is the sum of these:

∠2 = 75 + 64 = 139°

Answer 2

139 degrees is probably right... I did it in my head so u mighr want to check