- The
plural can be
either "
icosahedra" (/-drə/) or "icosahedrons".
There are
infinitely many non-similar
shapes of
icosahedra, some of them
being more symmetrical...
- The Fifty-Nine
Icosahedra is a book
written and
illustrated by H. S. M. Coxeter, P. Du Val, H. T.
Flather and J. F. Petrie. It
enumerates certain stellations...
-
called a snub octahedron, as s{3,4} or , and seen in the
compound of two
icosahedra.
Eight of the
vertices of the
dodecahedron are
shared with the cube. Completing...
- meet. The
notable is the
stellation of
icosahedra consisted of fifty-nine in the
works of The Fifty-Nine
Icosahedra.
Faceting is the
process of removing...
- its
structure is
highly complex, with a
mixture of C-B-C
chains and B12
icosahedra.
These features argued against a very
simple exact B4C
empirical formula...
- Coxeter, P. Du Val, H. T. Flather, and J. F. Petrie. The Fifty-Nine
Icosahedra.
Richard Poe, "Parts of the Rosary", TheChantRosary.com, 2-4-2018 v t...
-
symmetry in
materials science.
These arrangements are now
called Mackay icosahedra. He is a
pioneer in the
introduction of five-fold
symmetry in materials...
-
resemblance to
regular polyhedra, such as the icosahedron-shaped
Circogonia icosahedra pictured below. The
radiolarians belong to the
supergroup Rhizaria together...
-
Order of Canada. He was an
author of 12 books,
including The Fifty-Nine
Icosahedra (1938) and
Regular Polytopes (1947). Many
concepts in
geometry and group...
- vertices, 55
edges and 55 faces. It has Schläfli type {3,5,3}, with 3 hemi-
icosahedra (Schläfli type {3,5})
around each edge. It has
symmetry order 660, computed...
