If you need to find the area of a regular polygon all you need is the apothem! This tutorial shows you how to find the area of a regular pentagon when you only know the apothem.
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!
If two figures have the same size and shape, then they are congruent. The term congruent is often used to describe figures like this. In this tutorial, take a look at the term congruent!
Got a closed figure with three or more sides? Then you have a polygon! In this tutorial, you'll learn about the properties of a polygon, see the names of the most popular polygons, and learn how to identify polygons. Check it out!
Polygons come in all different shapes and sizes. Some polygons have special properties that allow them to be called regular polygons. In this tutorial, you'll see what it takes for a polygon to be given this special name. Check it out!
Plugging variables into an expression is essential for solving many algebra problems. See how to plug in variable values by watching this tutorial.