8 terms

180(n-2)

The formula for finding the sum of the interior angles of any polygon with n sides.

180

The sum of interior angles in a three sided polygon

360

The sum of interior angles in a four sided polygon.

540

The sum of interior angles in a five sided polygon

360

The sum of exterior angles in any polygon

pentagon

A five sided polygon

septagon

A seven sided polygon

decagon

A ten sided polygon