What is the measure of each interior angle of an 18 sided polygon?
An alternative method is to use the exterior angle.
the sum of the exterior angles is ALWAYS
So you can find the size of the exterior angles of a regular polygon quite easily:
If there are
The sum of the exterior and interior angles is
Each interior angle of an 18 sided polygon is
Sum of the interior angles of a polygon is given by the formula
Since it’s an 18 sided polygon,