Geometry Intermediate

Interior & Exterior Angles of Polygons

Enter the number of sides (3–12) and whether the polygon is regular or irregular. For irregular polygons, input each interior angle. The calculator verifies the angle sum and shows a labeled diagram.

Sum = (n−2)·180°
Exterior angles sum = 360°
Polygon with arc labels
Inputs
All sides and angles are equal.
Enter each interior angle (they should sum to (n−2)·180°).
Angles
Enter the polygon parameters above.
Step-by-Step Solution
Diagram
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