- dipyramid
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—dipyramidal /duy'pi ram"i dl/, adj./duy pir"euh mid/, n. Crystall.bipyramid.
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Universalium. 2010.
dipyramid
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dipyramid — di·pyramid … English syllables
dipyramid — (ˈ)dī+ noun Etymology: di + pyramid : a crystal consisting of two pyramids base to base, the one geometrically a mirror image of the other with respect to the horizontal plane of symmetry dipyramids occur in the tetragonal, hexagonal, and… … Useful english dictionary
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Gyroelongated dipyramid — In geometry, the gyroelongated dipyramids are an infinite set of polyhedra, constructed by elongating an n agonal bipyramid by inserting an n agonal antiprism between its congruent halves.Two members of the set can be deltahedra, that is,… … Wikipedia
Elongated dipyramid — In geometry, the elongated dipyramids are an infinite set of polyhedra, constructed by elongating an n agonal bipyramid (by inserting an n agonal prism between its congruent halves.There are three elongated dipyramids that are Johnson solids made … Wikipedia
Triangular dipyramid — For the related molecular geometry see trigonal bipyramid molecular geometry Infobox face uniform polyhedron Polyhedron Type=Dipyramid and Johnson J11 J12 J13 Face List=6 triangles Edge Count=9 Vertex Count=5 Symmetry Group= D 3h Face Type=V3.4.4 … Wikipedia
Pentagonal dipyramid — Infobox face uniform polyhedron Polyhedron Type=Dipyramid and Johnson J12 J13 J14 Face List=10 triangles Edge Count=15 Vertex Count=7 Symmetry Group= D 5h Face Type=V4.4.5 Dual=pentagonal prism Property List=convex, face transitive,… … Wikipedia
Elongated triangular dipyramid — Infobox Polyhedron Polyhedron Type=Johnson J 13 J14 J15 Face List=6 triangles 3 squares Edge Count=15 Vertex Count=8 Symmetry Group= D 3h Vertex List=2(33) 6(32.42) Dual=Triangular bifrustum Property List=convexIn geometry, the elongated… … Wikipedia
