by the number of sides, 'n' of that particular polygon. by the exterior angle. Therefore, the number of sides of the polygon is 24 sides.
15 sides
360/24 = 15 sides
15 equal sides
360/24 = 15 sides
Each exterior angle is 15 degrees
Providing that it's a regular polygon then: 360/15 = 24 sides
it really has twenty sides.
24 sides
It is: 360/24 = 15 sides
360/24 = 15 sides
It will have 360/24 = 15 sides