In the figure, if AB is parallel to CD, then x=?
A. 48
B. 38
C. 30
D. 42

Answer:
x = 48
Step-by-step explanation:
since AB and CD are parallel then
∠ AEF and ∠ DFE are same- side interior angles and sum to 180° , so
72 + 60 + x = 180 , that is
132 + x = 180 ( subtract 132 from both sides )
x = 48