Question

Find the value of x.

Answer 1

This is pentagon, so all angles add to 180(5-2) = 540 degrees

so add up all the angles and set that sum equal to 540


90+148+2x+10+2x+112 = 540


then solve for x

Answer 2

just add
90+148+10+112 = 360

then 2x +2x=4x

so is 360+4x=540

then -360 both sides (540-360=180)

4x=180

then 180/4=45

so x=45

90+148+2(45)+10+2(45)+112 = 540

Answer 3

Thanks guys!