Question

The interior angles formed by the sides of a quadrilateral have measures that sum to 360°.

What is the value of x?



Enter your answer in the box.
x =

Answer 1

2x+2x+124+124 = 360
4x+248 = 360
4x = 360 - 248
4x = 112
x = 112/4
x = 28

answer x = 28

Answer 2

Let

`angle 1=2x`°

`angle 2=2x`°

`angle 3=124`°

`angle 4=124`°

we know that

The interior angles formed by the sides of a quadrilateral have measures that sum to 360°

so

`angle 1+angle 2+angle 3+angle 4=360`°

`2x+2x+124+124=360\\ 4x+248=360\\ 4x=112\\ x=28degrees`

therefore

the answer is

`x=28degrees`