Augmented Octahedron
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Augmented Octahedron
In geometry, a diminished trapezohedron is a polyhedron in an infinite set of polyhedra, constructed by removing one of the polar vertices of a trapezohedron and replacing it by a new face (diminishment). It has one regular base face, triangle faces around the base, and kites meeting on top. The kites can also be replaced by rhombi with specific proportions. Along with the set of pyramids and elongated pyramids, these figures are topologically self-dual. It can also be seen as an augmented antiprism, with a pyramid augmented onto one of the faces, and whose height is adjusted so the upper antiprism triangle faces can be made coparallel to the pyramid faces and merged into kite-shaped faces. They're also related to the gyroelongated pyramids, as augmented antiprisms and which are Johnson solids for . This sequence has sets of two triangles instead of kite faces. Examples Special cases There are three special case geometries of the ''diminished trigonal trapezohedron ...
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Kite (geometry)
In Euclidean geometry, a kite is a quadrilateral with reflection symmetry across a diagonal. Because of this symmetry, a kite has two equal angles and two pairs of adjacent equal-length sides. Kites are also known as deltoids, but the word ''deltoid'' may also refer to a deltoid curve, an unrelated geometric object sometimes studied in connection with quadrilaterals.See H. S. M. Coxeter's review of in : "It is unfortunate that the author uses, instead of 'kite', the name 'deltoid', which belongs more properly to a curve, the three-cusped hypocycloid." A kite may also be called a dart, particularly if it is not convex. Every kite is an orthodiagonal quadrilateral (its diagonals are at right angles) and, when convex, a tangential quadrilateral (its sides are tangent to an inscribed circle). The convex kites are exactly the quadrilaterals that are both orthodiagonal and tangential. They include as special cases the right kites, with two opposite right angles; the rhombi, with two ...
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Diminished Hexagonal Trapezohedron
Diminished may refer to: *Diminution In Western music and music theory, diminution (from Medieval Latin ''diminutio'', alteration of Latin ''deminutio'', decrease) has four distinct meanings. Diminution may be a form of embellishment in which a long note is divided into a series ... in music * "Diminished" (R.E.M. song), from the 1998 album ''Up'' {{disambiguation ...
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Rhombic Diminished Octagonal Trapezohedron Net
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Heptagonal Trapezohedron Net
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Hexagonal Trapezohedron Net
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Pentagonal Trapezohedron Net
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Square Trapezohedron Net
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Trigonal Trapezohedron Net
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Octagonal Trapezohedron
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Heptagonal Trapezohedron
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Hexagonal Trapezohedron
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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Rhombic Diminished Pentagonal Trapezohedron
Rhombic may refer to: *Rhombus, a quadrilateral whose four sides all have the same length (often called a diamond) * Rhombic antenna, a broadband directional antenna most commonly used on shortwave frequencies * polyhedra formed from rhombuses, such as the rhombic dodecahedron or the rhombic triacontahedron or the rhombic dodecahedral honeycomb or the rhombic icosahedron or the rhombic hexecontahedron or the rhombic enneacontahedron or the trapezo-rhombic dodecahedron * other things that exhibit the shape of a rhombus, such as rhombic tiling, Rhombic Chess, rhombic drive, Rhombic Skaapsteker ''Psammophylax rhombeatus'' (psammo=sand, phylax=guard) or Rhombic Skaapsteker, is a small, attractively patterned, Southern African snake usually measuring between 45 and 85 centimetres in length, though occasionally reaching 140 cm. In co ..., rhombic egg eater, rhombic night adder, forest rhombic night adder {{disambiguation ...
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