Question

Quadrilateral CDEF is a parallelogram. solve for x

Answer 1

x = 25

Explanation:

the consecutive angles in a parallelogram sum to 180° , that is

∠ C + ∠ D = 180

4x + 28 + 52 = 180

4x + 80 = 180 ( subtract 80 from both sides )

4x = 100 ( divide both sides by 4 )

x = 25