Step-by-step explanation:
c.1. The formula for finding the measure of an interior angle of a convex polygon is 180° - the sum of the measures of the exterior angles.
c.2. x = 109.48
c.3. ZE = (5x+14)° = (5x+14)x180° = 990°
c.4. ZT = (4x-16)° = (4x-16)x180° = -704°
