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・ Tetragonus
・ Tetragonus catamitus
・ Tetragonus lycaenoides
・ Tetragram
・ Tetragrammatical Astygmata
・ Tetragrammaton
・ Tetragrammaton (disambiguation)
・ Tetragrammaton in the New Testament
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・ Tetragraptus
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・ Tetrahalomethane
・ Tetrahedral carbonyl addition compound
Tetrahedral cupola
・ Tetrahedral honeycomb
・ Tetrahedral hypothesis
・ Tetrahedral kite
・ Tetrahedral molecular geometry
・ Tetrahedral number
・ Tetrahedral prism
・ Tetrahedral symmetry
・ Tetrahedral-cubic honeycomb
・ Tetrahedral-dodecahedral honeycomb
・ Tetrahedral-icosahedral honeycomb
・ Tetrahedral-octahedral honeycomb
・ Tetrahedral-square tiling honeycomb
・ Tetrahedral-triangular tiling honeycomb
・ Tetrahedrally diminished dodecahedron


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Tetrahedral cupola : ウィキペディア英語版
Tetrahedral cupola

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In 4-dimensional
geometry, the tetrahedral cupola is a polychoron bounded by one tetrahedron, a parallel cuboctahedron, connected by 10 triangular prisms, and 4 triangular pyramids.〔(Convex Segmentochora ) Dr. Richard Klitzing, Symmetry: Culture and Science, Vol. 11, Nos. 1-4, 139-181, 2000 (4.23 tetrahedron || cuboctahedron)〕
== Related polytopes==
The ''tetrahedral cupola'' can be sliced off from a runcinated 5-cell, on a hyperplane parallel to a tetrahedral cell. The cuboctahedron base passes through the center of the runcinated 5-cell, so the Tetrahedral cupola contains half of the tetrahedron and triangular prism cells of the runcinated 5-cell. The cupola can be seen in A2 and A3 Coxeter plane orthogonal projection of the runcinated 5-cell:

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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