<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />

# 6.2: Perimeter

Difficulty Level: At Grade Created by: CK-12

## Learning Objectives

• Calculate the perimeter of regular and non-regular polygons.

## Perimeter

A perimeter is a path that surrounds an area.

The word perimeter comes from the Greek peri (around) and meter (measure).

This means that the perimeter is the measurement around a shape.

Perimeter can be thought of as the length of the outline of a shape. The word may be used either for the path or to describe its length.

To find the perimeter of a shape, you need to add up each segment that makes the border of the shape. For instance, in the diagram below, the length of each side of the rectangle is given:

The perimeter is the sum of all four _____________ of the rectangle, so it would be: 6 ft+4 ft+ ft+ ft=20 feet\begin{align*}6 \ ft + 4 \ ft + \underline{\;\;\;\;\;\;\;} \ ft + \underline{\;\;\;\;\;\;\;} \ ft = 20 \ feet\end{align*}

The perimeter of a circle is called circumference.

1. Fill in the blank: To find the __________________ of a shape, add up all of its sides.

2. Describe perimeter in your own words:

\begin{align*}{\;}\end{align*}

\begin{align*}{\;}\end{align*}

### Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes

Show Hide Details
Description
Authors:
Tags:

## Concept Nodes:

8 , 9 , 10
Date Created:
Feb 23, 2012
May 12, 2014
Save or share your relevant files like activites, homework and worksheet.
To add resources, you must be the owner of the section. Click Customize to make your own copy.