Dimension

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In mathematics, dimensions are parameters used to describe the position and characteristics of an object in space.

Basic Dimensions

A 0-dimensional object is a point, which has no length, height, or depth.

A 1-dimensional object is a line, or line segment, which has length, but no other characteristics.

A 2-dimensional object has length and height, but no depth. Examples of 2D objects are a plane and a polygon.

A 3-dimensional object has length, height, and depth. Examples of 3D objects are a cube and a sphere.

Other Dimensions

The 4th dimension is time, which is a way to measure physical change. Examples of 4D objects are a hypercube and a hypershpere.

See Also