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Definition of a Base

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Base

Base of Triangle and Trapezoid

D.Russell
Definition: The bottom of a shape, solid or three dimensional object. The base is what the object 'rests' on. Base is used in polygons, shapes and solids. The base is used as a reference side for other measurements, most often used in triangles. The base is the surface of the object that is stands on or it is the bottom line.
Examples:
The bottom of the triangular based prism is considered the base. The bottom line of the trapezoid can be considered the base.
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