The apothem is a line segment from center point of side of a regular polygon to the midpoint of the regular polygon.Note:
The irregular polygons does not contain apothem or center. Hence, apothem can be calculated only for the regular polygons.Formula to calculate apothem of a regular polygon when we know the length of any side of a polygon:where,
s = Length of any side of a polygon
n = Number of sides of a polygon
tan = Tan function calculated in degrees
Alternatively, if we know the circumradius (radius) of the polygon we can use this below formula to find the apothem.where,
r = Radius of Polygon
n = Number of Sides of a Polygon
cos = Cos function calculated in degrees
Use our below online apothem calculator to find the apothem of the given polygon. Enter the given values and click calculate button to find the answer.
Use this apothem calculator when you know the length of any side of a polygon:
Use this apothem calculator when you know the radius of the polygon:
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