**Dimension | Lines, Planes & Angles | Britannica**
https://www.britannica.com/science/dimension-geometry

WEBDimension, in common parlance, the measure of the size of an object, such as a box, usually given as length, width, and height. In mathematics, the notion of dimension is an extension of the idea that a line is one-dimensional, a plane is two-dimensional, and space is three-dimensional.

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