+128474 We have an irregular pentagon
The sum of the interior angles =
(Number of Sides - 2) * 180 =
(5 - 2) * 180 =
3 * 180 =
540°
So....this implies that
(2x + 10 ) + 148 + 90 + 112 + 2x = 540 simplify
4x + 360 = 540 subtract 360 from both sides
4x = 180 divide both sides by 4
x = 45
