tetrahedron
IPA: tɛtrʌhˈidrʌn
noun
- (geometry) A polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.
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Examples of "tetrahedron" in Sentences
- Otherwise known as a tetrahedron, a "Caltrop", or to a lesser degree "Ol' Pointy".
- Your tetrahedron could be our key to all the mysteries of Omegan science and history.
- A classic 3D fractal is the Sierpinski tetrahedron, which is a tetrahedron of tetrahedra of tetrahedra, etc.
- Above the tetrahedron is a balloon-shaped figure, apparently drawn into shape by the attraction of the tetrahedron.
- In our space, four equidistant points can be located, the vertices of a tetrahedron, that is, a pyramid having four triangular faces.
- A tetrahedron is a good model for e.g. a carbon atom in a molecular form, and the tighter the "packing," the tighter the molecular bonds.
- The tetrahedron is the form of chromium and molybdenum, but not that of the head of their group, oxygen, which is, like hydrogen, _sui generis_.
- It will be seen that the tetrahedron is the fundamental form, the three-sided pyramid on a triangular base, _i. e._, a solid figure formed from four triangles.
- Through them, one had a spec - tacular view across the river to the futuristic Flamme d'Or, the Phillippe Starke-designed building of black glass, a kind of tetrahedron on acid, surmounted by a vaguely flamelike shape derisively christened by Tokyoites "the Golden Turd."
- For the first prize in 1901 the Academy had to consider 20 nominations, but no less than 11 of these named van't Hoff, who was also chosen by the Committee for Chemistry. van't Hoff had already during his thesis work in Utrecht in 1874 published his suggestion that the carbon atom has its four valences directed towards the corners of a regular tetrahedron, a concept which is the very foundation of modern organic chemistry.
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