Question

Find the measures of an exterior angle and an interior angle given a regular polygon with 3 sides. Round to the nearest tenth, if necessary.

Answer 1

Explanation:

A regular polygon with 3 sides is an equilateral/equiangular triangle. All the interior angles measure 60 degrees. The exterior angles are supplementary to that (add up to 180) so an exterior angle is 180 - 60 = 120