Answer:
x = 39
Step-by-step explanation:
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
108° is the external angle of the complete triangle. thus
unknown + (37 + 32) = 108, that is
unknown + 69 = 108 ( subtract 69 from both sides )
unknown = 39
Now the unknown = x ( vertical angles ), that is
x = 39
