Apothem of a Regular Polygon Calculator

In a polygon, a line to the midpoint of one of the sides from the center is called as apothem. Find the apothem of a regular polygon or circumradius of the incircle using this free online calculator.

Apothem of a Regular Polygon Calculation

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Formula Used:

r = a / [2 tan(π / n)] [or] r = R cos (π / n) Apothem of regular polygon R = Circumradius π = 3.14159... a = Side length n = Number of side

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