Answer:
x = 18 , y = 108
Explanation:
∠ 1 and ∠ 3 are vertically opposite angles and are congruent , then
4x = 72 ( divide both sides by 4 )
x = 18
∠ 2 and ∠ 3 are a linear pair and sum to 180° , that is
∠ 2 + 72 = 180 ( subtract 72 from both sides )
∠ 2 = y = 108