Polygon Angles
GEOMETRY
Polygon Angles
Find interior and exterior angles of a regular polygon.
UNDERSTAND YOUR RESULT
How it works
Find interior and exterior angles of a regular polygon.
THE CALCULATIONinterior angle sum = (n − 2) × 180°
Using this calculator
Enter number of sides. interior angle sum = (n − 2) × 180°.
What to keep in mind
Use the same length unit for all lengths. Areas use squared units and volumes use cubed units. Diagrams are not to scale; inputs must satisfy the shape’s geometry.
Frequently asked questions
Are my entries saved?
No. Calculator inputs remain in the current page and are cleared when you reload or leave. The tools do not upload your entries.
Why are results rounded?
The display is rounded for readability. Calculations use unrounded intermediate values. An estimate should not be interpreted as an exact measurement.