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