# Regular Polygon Calculator

> Calculate the perimeter, area, apothem, and interior and exterior angles of a regular polygon from the number of sides and side length.

**URL:** https://www.calculatoranswers.com/regular-polygon-calculator
**Category:** Education

## Quick Answer

Calculate properties of any regular polygon. Enter the number of sides and one known dimension to find the area, perimeter, and angles.

## Definition

A regular polygon calculator is a mathematical utility that computes the geometric properties of equilateral and equiangular polygons. By entering the number of sides and either the side length, circumradius, inradius (apothem), or area, the calculator determines all remaining dimensions. It calculates the perimeter, area, sum of interior angles, and individual exterior angles. Students and graphic designers use this tool to construct symmetric shapes, analyze geometric relationships, and solve trigonometry problems.

## How to Use

1. **Enter number of sides** — Type the total number of sides of your regular polygon.
2. **Input one known parameter** — Type either the side length, apothem, or radius in the field.
3. **Read polygon metrics** — View the calculated area, perimeter, interior angles, and apothem.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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