In geometry, a solid shape with triangular side-faces meeting at a common vertex (point) and with a polygon
as its base. The volume V
of a pyramid is given by V
, where B
is the area of the base and h
is the perpendicular height.
Pyramids are generally classified by their bases. For example, the Egyptian pyramids have square bases, and are therefore called square pyramids. A triangular pyramid is also known as a tetrahedron (four sides).
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