- 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...
- 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 59 Seconds...
-
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...
- is the sum of its
every face. Therefore, the
surface area of
regular icosahedra A {\displaystyle A}
equals the area of 20
equilateral triangles. The volume...
- 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...
-
contain cells of Kepler-Poinsot
polyhedra alongside regular tetrahedra,
icosahedra and dodecahedra. Five-dimensional and
every higher dimension: zero regular...
- two
conjugacy classes of
twelve 5-cycles in A5 are
represented by two
icosahedra, of
radii 2π/5 and 4π/5, respectively. The
nontrivial outer automorphism...
- Coxeter–Dynkin diagrams: This
honeycomb can be alternated,
creating pyritohedral icosahedra from the
truncated octahedra with
disphenoid tetrahedral cells created...
-
resemblance to
regular polyhedra, such as the icosahedron-shaped
Circogonia icosahedra pictured below. The
radiolarians belong to the
supergroup Rhizaria together...
