Angles in polygons
You need to memorise the following terms- interior angles
- exterior angles
The sum of the interior angles of an n-sided polygon is 180(n-2)°.
The sum of the exterior angles is 360° (remember the man in the hat).

The sum of the interior angles of an n-sided polygon is 180(n-2)°.
The sum of the exterior angles is 360° (remember the man in the hat).