Answer:
∠ a = 111°
Step-by-step explanation:
The angle on the left side of the triangle is vertically opposite to 46° and are congruent (equal, that is 46°
The exterior angle of a triangle is equal to the sum of the two opposite interior angles
∠ a is an exterior angle of the triangle , then
∠ a = 46° + 65° = 111°
