Regular Polygon Calculator
Calculate properties of any regular N-sided polygon including area, perimeter, interior angle, exterior angle, apothem, and circumradius.
How to Use Regular Polygon Calculator
The Regular Polygon Calculator computes all geometric properties of any regular (equilateral and equiangular) polygon. Enter the number of sides (3 or more) and the side length to instantly calculate the perimeter, area, interior angle, exterior angle, apothem (inradius), circumradius, and number of diagonals. Works for triangles, squares, pentagons, hexagons, and any N-gon. Essential for geometry students, architects, designers, and engineers working with polygonal shapes.
Step-by-Step Instructions
- Enter the number of sides (3 or more)
- Enter the side length
- Click Calculate to see all properties
- View area, perimeter, angles, apothem, and circumradius
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