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Tetrahedron, LLC is a non-profit educational corporation that was founded in 1978 by internationally known public health authority, Dr. Leonard G. Horowitz, to educate people around the world on matters of extreme public importance.
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www.tetrahedron.org/
www.tetrahedron.org/
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Tetrahedron - Wikipedia, the free encyclopedia
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In geometry, a tetrahedron (plural: tetrahedra ) is a polyhedron composed of four triangular faces, three of which meet at each vertex. A regular tetrahedron is one in which the four triangles a...
en.wikipedia.org/wiki/Tetrahedron
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Something around the tetrahedron ... A tetrahedron is a three-dimensional figure with four equilateral triangles. If you lift up three triangles (1), you get the tetrahedron in top view (2). Generally it is shown in perspective (3).
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www.mathematische-basteleien.de/tetrahedron.htm
www.mathematische-basteleien.de/tetrahedron.htm
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Tetrahedral symmetry - Wikipedia, the free encyclopedia
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A regular tetrahedron has 12 rotational (or orientation-preserving) symmetries, and a total of 24 symmetries including transformations that combine a reflection and a rotation. The group of all symmet...
en.wikipedia.org/wiki/Tetrahedral_symmetry
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Tetrahedron publishes experimental and theoretical research results of outstanding significance and timeliness in the field of organic chemistry and its application to related disciplines especially bio-organic chemistry.
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www.elsevier.com/locate/tet
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Facts about the Tetrahedron ... Dual: Tetrahedron ... The tetrahedron can be constructed with two different kinds of generating triangles; see also its alternate.
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www.scienceu.com/geometry/facts/solids/tetra.html
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Each side of the tetrahedron is in green. We will refer to the side or edge of the tetrahedron as ‘ts.’ ; The tetrahedron has 6 sides, 4 faces and 4 vertices. In Figure 1 the base is marked out in gray: the triangle BCD. Each of the faces is an equilateral triangle. ;
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www.kjmaclean.com/Geometry/Tetrahedron.html
www.kjmaclean.com/Geometry/Tetrahedron.html
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Manipulating the shapes on this page. ... A platonic solid is a polyhedron all of whose faces are congruent regular polygons, and where the same number of faces meet at every vertex. The best know example is a cube (or hexahedron ) whose faces are ... 3 triangles meet at each vertex. This gives rise to a Tetrahedron.
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www.math.utah.edu/~alfeld/math/polyhedra/polyhedra.html
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[tĕt́rə-hḗdrən]
