Question

Find the value of x.

Answer 1

the answer for this question is 66 ie c option .now how you will thank me?

Answer 2

C

Explanation:

The sum of the angles is 360; n represents number of sides

S = (n - 2) x 180

S = (4-2) x 180

S = 2 x 180

S = 360

Setup the equation and simplify

2x + 10 + x - 20 + x + 40 + x = 360

5x +30 = 360

5x +30 - 30 = 360 - 30

5x = 330

5x/5 = 330/5

x = 66