Question

How many sides does a regular polygon have if one exterior angle is 90 degrees?

Answer 1

the polygon will have four sides because the sum of all the exterior angles in a regular polygon is 360 and they all have the same measure so 360/90 = 4

Answer 2

4 sides. Exterior angles add up to 360 degrees, and a regular polygon has equal sides. 360 degrees divided by 90 degrees equals 4 sides.