Interactive Websites. HippoCampus - Homework and Study Help - Free help with your algebra, biology, environmental science, American government, US history, physics and religion homework. High School Math. 3D Shapes . Intro. We live in a three-dimensional world. Every object you can see or touch has three dimensions that can be measured: length, width, and height.
The room you are sitting in can be described by these three dimensions. The monitor you're looking at has these three dimensions. Even you can be described by these three dimensions. In the world around us, there are many three-dimensional geometric shapes. Online Graphing Calculators: WebGraphing.com.