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MathMentor

Learn with Mentor · 8 min

Interior Angles of Polygons

Use (n - 2) x 180 degrees to find a polygon's interior angle sum, then divide by the side count when the polygon is regular.

Let's start

Start with the side count

These questions name a polygon by a code such as P7814 or R8412, then tell you how many sides it has. The code is just a label. The number of sides is the useful information.