Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measures.

What's the Formula for the Perimeter of a Rectangle?

What is the formula for the perimeter of a rectangle? This tutorial shows you how to find that formula!
How Do You Find the Perimeter of a Shape?

Ever had someone come up to you on the street, hand you a shape, and ask you to find the perimeter of that shape? Watch this tutorial, and next time that happens you'll be ready!
How Do You Find the Perimeter of a Rectangle?

Finding the perimeter of a rectangle is as easy as adding up all its side lengths! This tutorial takes you through the steps needed to find the perimeter of a rectangle.