Dimensions - Research Article from Macmillan Science Library: Mathematics

This encyclopedia article consists of approximately 4 pages of information about Dimensions.
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Portraying Three Dimensions

Even though most everyday experience is in three dimensions, most high school mathematics takes place in a two-dimensional world in which there is only length and width. Part of this is because traditional learning is largely communicated through books or on a chalkboard. Book pages or the planes of chalkboards have primarily two dimensions. Even if there is a picture in a book of a three-dimensional object, the object is "flattened" so that its likeness can be communicated through a two-dimensional medium. This can cause differences between what we see in a three-dimensional object and how the object is portrayed in two dimensions.

For example, consider a cube. In real life, a vertex of a cube is formed when three 90° angles from three different square faces intersect at a point. However, in a two-dimensional representation of a cube, the right angles may measure other...

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This section contains 1,011 words
(approx. 4 pages at 300 words per page)
Buy the Dimensions Encyclopedia Article
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Macmillan Science Library: Mathematics
Dimensions from Macmillan Science Library: Mathematics. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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