Quadirateral abcd~=quadirateral ef , what is the value of x?
a.) x=75
b.)x=80
c.)x=100
d.)x=105

The answer to your question is: letter C = 100

Step-by-step explanation:

∠A = 80    ∠B = 75 ∠C = x = ? ∠D = 105

The sum of the angles in a quadrilateral = 360°

Like ABCD ≈ EDFG the magnitude of the angles is the same

Then:

∠A + ∠B + ∠C + ∠D = 360

80 + 75 + ∠C + 105 = 360

∠C = 360 - 80 - 75 - 105

∠C = 100

360 different combinations