Answer:
x =33
Step-by-step explanation:
The exterior angle on a triangle is equal to sum of the opposite interior angles
145 = x+112
Subtract 112 from each side
145-112 = x+112-112
33 =x
33°
Exterior angle = sum of interior angles
145 = 112 + x
x = 145 - 112
x = 33°
