• Taylor & Francis, p. 42–43, ISBN 978-90-5699-681-9. Wikimedia Commons has media related to Pyramids (geometry). Weisstein, Eric W. "Pyramid". MathWorld....
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  • Thumbnail for Trigonal pyramidal molecular geometry
    In chemistry, a trigonal pyramid is a molecular geometry with one atom at the apex and three atoms at the corners of a trigonal base, resembling a tetrahedron...
    4 KB (317 words) - 18:50, 10 December 2024
  • Thumbnail for Square pyramid
    In geometry, a square pyramid is a pyramid with a square base and four triangles, having a total of five faces. If the apex of the pyramid is directly...
    24 KB (2,524 words) - 02:08, 16 July 2025
  • Thumbnail for Square pyramidal molecular geometry
    Square pyramidal geometry describes the shape of certain chemical compounds with the formula ML5 where L is a ligand. If the ligand atoms were connected...
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  • Thumbnail for Pentagonal pyramid
    In geometry, a pentagonal pyramid is a pyramid with a pentagon base and five triangular faces, having a total of six faces. It is categorized as a Johnson...
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  • Thumbnail for Solid geometry
    sphere and its interior. Solid geometry deals with the measurements of volumes of various solids, including pyramids, prisms (and other polyhedrons)...
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  • Thumbnail for Hexagonal pyramid
    In geometry, a hexagonal pyramid is a pyramid with a hexagonal base upon which are erected six triangular faces that meet at a point (the apex). Like any...
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  • In geometry, a tetrahedron (pl.: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six...
    77 KB (9,606 words) - 04:12, 22 July 2025
  • Thumbnail for Gyroelongated square pyramid
    In geometry, the gyroelongated square pyramid is the Johnson solid that can be constructed by attaching an equilateral square pyramid to a square antiprism...
    6 KB (604 words) - 00:41, 22 July 2025
  • Thumbnail for Gyroelongated pentagonal pyramid
    In geometry, the gyroelongated pentagonal pyramid is a polyhedron constructed by attaching a pentagonal antiprism to the base of a pentagonal pyramid. An...
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  • Thumbnail for Elongated square pyramid
    In geometry, the elongated square pyramid is a convex polyhedron constructed from a cube by attaching an equilateral square pyramid onto one of its faces...
    7 KB (720 words) - 01:29, 27 June 2025
  • Thumbnail for Cubic pyramid
    In 4-dimensional geometry, the cubic pyramid is bounded by one cube on the base and 6 square pyramid cells which meet at the apex. Since a cube has a...
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  • Thumbnail for Elongated triangular pyramid
    In geometry, the elongated triangular pyramid is one of the Johnson solids (J7). As the name suggests, it can be constructed by elongating a tetrahedron...
    6 KB (624 words) - 01:21, 27 June 2025
  • Thumbnail for Elongated pyramid
    In geometry, the elongated pyramids are an infinite set of polyhedra, constructed by adjoining an n-gonal pyramid to an n-gonal prism. Along with the set...
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  • Thumbnail for Apex (geometry)
    In geometry, an apex (pl.: apices) is the vertex which is in some sense the "highest" of the figure to which it belongs. The term is typically used to...
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  • Thumbnail for MyPyramid
    MyPyramid, released by the USDA Center for Nutrition Policy and Promotion on April 19, 2005, was an update on the earlier American food guide pyramid....
    14 KB (1,388 words) - 21:56, 28 June 2025
  • Thumbnail for Octahedral pyramid
    In 4-dimensional geometry, the octahedral pyramid is bounded by one octahedron on the base and 8 triangular pyramid cells which meet at the apex. Since...
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  • Thumbnail for 5-cell
    5-cell (redirect from Tetrahedral pyramid)
    In geometry, the 5-cell is the convex 4-polytope with Schläfli symbol {3,3,3}. It is a 5-vertex four-dimensional object bounded by five tetrahedral cells...
    37 KB (3,706 words) - 23:27, 16 July 2025
  • Thumbnail for Hyperpyramid
    In geometry, a hyperpyramid is a generalisation of the normal pyramid to n dimensions. In the case of the pyramid one connects all vertices of the base...
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  • Thumbnail for Pentagonal pyramidal molecular geometry
    In chemistry, pentagonal pyramidal molecular geometry describes the shape of compounds where in six atoms or groups of atoms or ligands are arranged around...
    2 KB (146 words) - 10:15, 19 July 2024
  • Thumbnail for Affine geometry
    In mathematics, affine geometry is what remains of Euclidean geometry when ignoring (mathematicians often say "forgetting") the metric notions of distance...
    20 KB (2,630 words) - 16:06, 12 July 2025
  • height of pyramids and the distance of ships from the shore. He is credited with the first use of deductive reasoning applied to geometry, by deriving...
    101 KB (10,041 words) - 09:53, 17 July 2025
  • Thumbnail for Elongated pentagonal pyramid
    The elongated pentagonal pyramid is a polyhedron constructed by attaching one pentagonal pyramid onto one of the pentagonal prism's bases, a process known...
    5 KB (501 words) - 01:30, 27 June 2025
  • Thumbnail for VSEPR theory
    VSEPR theory (category Molecular geometry)
    the molecular shape or geometry describes the geometric arrangement of the atomic nuclei only, which is trigonal-pyramidal for NH3.: 410–417  Steric...
    46 KB (4,078 words) - 13:51, 21 July 2025
  • center. When τ5 is close to 0 the geometry is similar to square pyramidal, while if τ5 is close to 1 the geometry is similar to trigonal bipyramidal:...
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  • Thumbnail for Dithionite
    not a sulfite. The dianion has a steric number of 4 and trigonal pyramidal geometry. In its main applications, dithionite is generally prepared in situ...
    4 KB (448 words) - 08:34, 22 November 2024
  • Thumbnail for Frustum
    In geometry, a frustum (Latin for 'morsel'); (pl.: frusta or frustums) is the portion of a solid (normally a pyramid or a cone) that lies between two...
    9 KB (1,291 words) - 15:17, 13 April 2025
  • Thumbnail for Berry mechanism
    Berry mechanism (category Molecular geometry)
    such as PF5, though it can also occur in molecules with a square pyramidal geometry. The Berry mechanism is named after R. Stephen Berry, who first described...
    4 KB (451 words) - 08:40, 15 March 2025
  • however do enable .360 processing. The Pyramid projection is a variation of the cubemap using a pyramid geometry. The video is rendered in multiple viewports...
    5 KB (583 words) - 00:08, 26 February 2025
  • Thumbnail for Trigonal planar molecular geometry
    a tetrahedral molecular geometry. One way to observe this distortion is in pyramidal alkenes. AXE method Molecular geometry VSEPR theory March, Jerry...
    3 KB (257 words) - 21:24, 18 July 2025