Enter 2 values

<-- Side Length
<-- # of Sides
<-- Radius
<-- Apothem
<-- Perimeter

How does the Polygons Calculator work?
Free Polygons Calculator - Using various input scenarios of a polygon such as side length, number of sides, apothem, and radius, this calculator determines Perimeter or a polygon and Area of the polygon. This also determines interior angles of a polygon and diagonals of a polygon as well as the total number of 1 vertex diagonals.
This calculator has 5 inputs.

What 13 formulas are used for the Polygons Calculator?

P = n x s
A = s2n/4tan(π/n)
Interior Angle Sum = (n - 2) x 180°
Diagonals = n(n - 3)/2
1 vertex Diagonals = n - 3
Triangles = N - 2
5 sides = Pentagon
6 sides = Hexagon
7 sides = Heptagon
8 sides = Octagon
9 sides = Nonagon
10 sides = Decagon

For more math formulas, check out our Formula Dossier
What 6 concepts are covered in the Polygons Calculator?
a line segment from the center to the midpoint of one of its sides
Number of square units covering the shape
line segment that goes from one corner to another, but is not an edge
The distance around a shape or object
A plane figure bounded by a set of straight lines
Distance from the center of a circle to the edge
Example calculations for the Polygons Calculator