All polygons have interior and exterior angles. Regular polygons also have central angles.

You can find the central angle of a regular polygon by dividing 360 by the number of sides/central triangles in the polygon: central = 360÷n.

The interior and exterior angles together make a straight angle:

interior + exterior = 180°.

Can you find a relationship between the central angle measure and the exterior angle measure for a regular polygon? Can you find a relationship between the interior angle and central angle measures?