In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces, twelve edges, and six vertices.
In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces, twelve edges, and six vertices. The term is most commonly used to refer to the regular octahedron, a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex. A regular octahedron is the dual polyhedron of a cube. It is a rectified tetrahedron. It is a square bipyramid in any of three orthogonal orientations. It is also a triangular antiprism in any of four orientations.
Octahedron is the fifth full-length studio album by American progressive rock band the Mars Volta, released on June 23, 2009. The album was released by Warner Bros. Records in North America and Mercury Records worldwide
Octahedron is the fifth full-length studio album by American progressive rock band the Mars Volta, released on June 23, 2009. Records in North America and Mercury Records worldwide. It is the last studio album to feature drummer Thomas Pridgen and guitarist John Frusciante, and the first not to feature contributions from keyboardist Isaiah "Ikey" Owens.
A cuboctahedron has octahedral symmetry. Its first stellation is the compound of a cube and its dual octahedron, with the vertices of the cuboctahedron located at the midpoints of the edges of either. A cuboctahedron can be obtained by taking an equatorial cross section of a four-dimensional 24-cell or 16-cell. A hexagon can be obtained by taking an equatorial cross section of a cuboctahedron. The cuboctahedron is a rectified cube and also a rectified octahedron. It is also a cantellated tetrahedron. The cuboctahedron is one of a family of uniform polyhedra related to the cube and regular octahedron.
In geometry, a Bricard octahedron is a member of a family of flexible polyhedra constructed by Raoul Bricard in 1897. That is, it is possible for the overall shape of this polyhedron to change in a continuous motion, without any changes to the lengths of its edges nor to the shapes of its faces. These octahedra were the first flexible polyhedra to be discovered.
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octahedron - NOUN (pl. octahedra or octahedrons) ▪ a three dimensional shape having eight plane faces, in particular eight equal triangular faces. DERIVATIVES octahedral adjective. DERIVATIVES octahedral adjectiv. nglish terms dictionary. octahedron - n. pl. octahedrons or octahedra a solid figure with eight plane surfaces: see POLYHEDRON octahedral ad. nglish World dictionary. Octahedron - For the album by The Mars Volta, see Octahedron (album)
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