Mammoth Memory

Interior angles of polygons

What is an interior and exterior angle?

Interior = Inside

Concentrate on the beginning of the word IN.

 

Example 1

To work out the interior or exterior angle of a polygon you need to define the interior or exterior angle 

Example 2

The interior angle it the angle of a corner inside the shape the exterior is the angle outside of the corner of a shape, both angles must be added and equal 180 degrees