Home > Pre-Algebra > Perimeter > Perimeter of a Triangle

## Perimeter of a Triangle

#### Introduction

The perimeter of a triangle can be described as the distance around all three sides of the triangle. The green line around the triangle below indicates the perimeter of the triangle.

#### Terms

Triangle - A polygon with three sides.
Perimeter - The distance around all the edges of a geometric figure.

## Examples

#### Perimeter of a Triangle

Perimeter = Side1 + Side2 + Side3
$\text{Perimeter} = 13.42 + 16 + 15.62$
$\text{Perimeter} = 45.04$

#### Perimeter of a Triangle

Perimeter = Side1 + Side2 + Side3
$\text{Perimeter} = 7.29 + 12 + 10.06$
$\text{Perimeter} = 29.35$