The exterior angle is \(360 \div 5 = 72^\circ ... All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior angle is: interior angle of a ...

Polygons can be regular or irregular ... the angle formed outside the polygon is the exterior angle. The sum of the exterior angles of a polygon is 360°. The sum of exterior angles is 360°.

Regular polygons can also be categorized as convex ... Concave polygons have at least one corner, or exterior angle, that connects within the boundary of the closed shape. This concave appearance ...