A regular polygon has an interior angle with a measure of 135how many side does the polygon have?

Answer 1

The number of sides of a regular polygon is 360 divided by the size of the exterior angle. The external angle is 180 - the internal angle.

So for a regular polygon with an internal angle of 135 we get the following.

360 / (180 - 135) = 360 / 45 = 8 sides