## Introduction

An octagon is a eight-sided polygon or 8-gon, which means that it has eight equal side. Calculate its perimeter and area.

# Octagon Formulas Calculator

## Introduction

An octagon is a eight-sided polygon or 8-gon, which means that it has eight equal side. Calculate its perimeter and area.

# Description

An octagon is a eight-sided polygon or 8-gon, which means that it has eight equal side. Calculate its perimeter and area.

$a$, Symbol for Side;
$p$, Symbol for Perimeter;
$A$, Symbol for Area;

## Perimeter of an octagon

$8a$

# Output

## Area of an octagon

$2{a}^{2}\left(1+\sqrt{2}\right)$

# Output

## References

Figure - 16.1 By László Németh - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=27295120