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Pronunciation varies by accent · noun
(mathematics) A four-dimensional object analogous to a tetrahedron, constructed out of five tetrahedra..
A triangle becomes a tetrahedron (a type of pyramid), then a pentachoron (a hyperpyramid).
Geometrically, K₃ relates to a triangle, K₄ a tetrahedron, K₅ a pentachoron, etc.
The tetrahedron is a 3-simplex whose 4-simplex analog is the pentachoron, a four-dimensional body which can be orphographically ^([sic]) projected onto a quincrux (as well as a pentagram and other shapes).
Use pentachoron when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pentachoron means (mathematics) A four-dimensional object analogous to a tetrahedron, constructed out of five tetrahedra..
Common synonyms include 5-cell.
The opposite depends on the specific sense.
A triangle becomes a tetrahedron (a type of pyramid), then a pentachoron (a hyperpyramid).
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