It is the last choice or #3 or a C.
Answer:
x = 52
The exterior angle of a triangle is equal to the sum of the opposite interior angles
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the opposite interior angles
x+72 = 90+34
Combine like terms
x+72 = 124
Subtract 72 from each side using the subtraction property of equality
x+72-72 = 124 -72
x =52