Question

find the measure of the exterior angle.
the measure of the exterior angle of the triangle is □°.

Explanation:

Step1: Recall exterior angle theorem

The exterior angle of a triangle equals the sum of the two non-adjacent interior angles.

Step2: Add the two interior angles

$\text{Exterior angle} = 75^\circ + 64^\circ$

Step3: Calculate the sum

$75 + 64 = 139$

Answer:

$139^\circ$