Question

Find the value of x in the following quadrilateral.

Answer 1

The value of x is 8.

Explanation:

Given that total angles in a quadrilateral is 360°. So in order to find x, you have to add up all the angles together to make it equals to 360° :

`101 + 12x + 3 + 9x - 2 + 90 = 180`

`192 + 21x = 360`

`21x = 360 - 192`

`21x = 168`

`x = 168 / 21`

`x = 8`

Answer 2

see below

Explanation:

Because the sum of all angles in a quadrilateral is 360° we have:

90 + 101 + 12x + 3 + 9x - 2 = 360

21x + 192 = 360

21x = 168

x = 8°