Video: Pyramid in Math: Definition & Practice Problems A pyramid is a 3-dimensional geometric shape formed by connecting all the corners of a polygon to a central apex. This lesson will define what a pyramid is and discuss the different types of pyramids and formulas surrounding them. read more

A pyramid is a polyhedron that has a base, which can be any polygon, and three or more triangular faces that meet at a point called the apex. These triangular sides are sometimes called the lateral faces to distinguish them from the base. read more

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This is a square pyramid, but there are also triangular pyramids, pentagonal pyramids, and so on. read more

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Wikipedia:

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Definition of Pyramid

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Definition, Examples & Fun Math Worksheets

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Math is Fun

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Math Open Reference

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