Question

two angles of a polygon are right angles and every other angle is 120 degree find the number of sides of the polygon

Answer 1

Answer:

Total sides are 5.

Step-by-step explanation:

Let sides with angle 120 be x, to tal sides be (x+2)

The ext. angles would be 90, 90, 60x

we know, sum of ext. angles = 360

90 + 90 + 60x = 360

60x = 360-180 = 180

x = 3

x+2 = 5