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Mathematics

Regular Polygon Calculator

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Variable Legend

n= number of sidess= side lengtha= apothem (center to midpoint of side)A= areaP= perimeter

Perimeter

Total length of all sides.

Interior angle

Each interior angle of a regular polygon.

Area (from side length)

Using the apothem derived from the side.

Area (from apothem)

Half the perimeter times the apothem.

Apothem from side length

Perpendicular distance from center to a side.

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Mathematically verified
Reviewed June 2026
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