# #### Perimeter

## What is Perimeter?

The perimeter of a shape is the distance around the outside of the shape.

## How to Find the Perimeter

1. Identify the lengths of all the sides of the shape.
2. Add the side lengths together.

## Perimeter of Regular Polygons

Regular polygons are closed shapes with straight sides that are all the same length. Because all of the sides are the same length, the perimeter of a regular polygon can be calculated with this perimeter formula:

The $$n$$ represents the number of sides that the polygon has and the $$s$$ represents the side length that all of the sides share.

### Examples

#### Perimeter of a Hexagon

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

#### Perimeter of an Octagon

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

## Units of Perimeter

Perimeter is a one-dimensional measurement so the units of perimeter will always be single units like $$in$$, $$m$$, $$cm$$, etc.

In contrast, area is measured in squared units like $$in^2$$, $$m^2$$, and $$cm^2$$ because it is a two-dimensional measurement.

Similarly, volume is measured in cubed units like $$in^3$$, $$m^3$$, and $$cm^3$$ because it is a three-dimensional measurement.