A Polyhedron with one face a Polygon and all the other faces Triangles with a common
Vertex. An -gonal regular pyramid (denoted ) has Equilateral
Triangles, and is possible only for , 4, 5. These correspond to the Tetrahedron,
Square Pyramid, and Pentagonal Pyramid, respectively. A pyramid therefore has a single cross-sectional shape in
which the length scale of the Cross-Section scales linearly with height. The Area at a height is given by
The Centroid is the same as for the Cone, given by
See also Bipyramid, Elongated Pyramid, Gyroelongated Pyramid, Pentagonal Pyramid, Pyramid, Pyramidal Frustum, Square Pyramid, Tetrahedron, Truncated Square Pyramid
Beyer, W. H. (Ed.) CRC Standard Mathematical Tables, 28th ed. Boca Raton, FL: CRC Press, p. 128, 1987.
Hart, G. W. ``Pyramids, Dipyramids, and Trapezohedra.''
Hart, G. W. ``Pyramids, Dipyramids, and Trapezohedra.'' http://www.li.net/~george/virtual-polyhedra/pyramids-info.html.
© 1996-9 Eric W. Weisstein