In geometry, the grand antiprism or pentagonal double antiprismoid is a uniform polychoron (4-dimensional uniform polytope) bounded by 320 cells: 20 pentagonal antiprisms, and 300 tetrahedra. It is an anomalous, non-Wythoffian uniform polychoron, discovered in 1965 by Conway and Guy.
Read more about Grand Antiprism: Alternate Names, Structure, Vertex Figure, Construction, Projections
Famous quotes containing the word grand:
“One would like to be grand and heroic, if one could; but if not, why try at all? One wants to be very something, very great, very heroic; or if not that, then at least very stylish and very fashionable. It is this everlasting mediocrity that bores me.”
—Harriet Beecher Stowe (18111896)