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tetrahedron |
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tetrahedron: see polyhedron polyhedron (pŏl'ēhē`drən), closed solid bounded by plane faces; each face of a polyhedron is a polygon . ..... Click the link for more information. . tetrahedron 1. a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles 2. any object shaped like a tetrahedron tetrahedron [‚te·trə′hē·drən] (crystallography) An isometric crystal form in cubic crystals, in the shape of a four-faced polyhedron, each face of which is a triangle. (mathematics) A four-sided polyhedron. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Collins, for reasons obscure even to himself, enlists four of his students in an after-school club to build a giant tetrahedron composed of 16,384 smaller tetrahedrons to get themselves into the Guinness Book of World Records. The outer compressive grid is linked by tetrahedrons to an inner tensile grid. Rarely shown because of its complexity, Detail d'une structure infinie de tetraedres limitee par les murs, le sol et le plafond d'une piece (Detail of an infinite structure of tetrahedrons limited by the walls, floor, and ceiling of a room), 1971, takes up an entire room, as its title indicates, thereby offering a unique and satisfying example of the "allover" principle applied to a three dimensional space. |
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