Question

Quadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruent. Prove that Quadrilateral ABCD is a parallelogram by finding the value of x.
AB = x + 15
AD = 2x + 18
BC = 3 - x
CD = 3x + 25
options are:
A) x = 3
B) x = −5
C) x = −11
D) x = 11/2