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Welcome to Illuminations. National Library of Virtual Manipulatives. 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. Math is Fun - Maths Resources. Welcome to A Maths Dictionary for Kids 2011 by Jenny Eather.