- In geometry, the
regular icosahedron (or
simply icosahedron) is a
convex polyhedron that can be
constructed from
pentagonal antiprism by
attaching two...
- "
regular icosahedron"
generally refers to the
convex variety,
while the
nonconvex form is
called a
great icosahedron. The
convex regular icosahedron is...
-
dodecahedron and
icosahedron are dual polyhedra. A
regular dodecahedron has 12
faces and 20 vertices,
whereas a
regular icosahedron has 20
faces and 12...
- (Smith, 1982, p212), of
which there are 48.
Neither the
regular icosahedron nor the
regular dodecahedron are
amongst them, but
crystals can have the...
- water, and fire) with a
regular solid.
Earth was ****ociated with the cube, air with the octahedron,
water with the
icosahedron, and fire with the tetrahedron...
- In geometry, the
great icosahedron is one of four Kepler–Poinsot
polyhedra (nonconvex
regular polyhedra), with Schläfli
symbol {3,5⁄2} and Coxeter-Dynkin...
-
icosahedron is the
outermost stellation of the
icosahedron, and is "complete" and "final"
because it
includes all of the
cells in the
icosahedron's stellation...
-
truncated icosahedron is an
Archimedean solid, one of 13
convex isogonal nonprismatic solids whose 32
faces are two or more
types of
regular polygons....
- to the
great icosahedron {3, 5/2}. All of
these regular star
dodecahedra have
regular pentagonal or
pentagrammic faces. The
convex regular dodecahedron...
-
tetrahedra is one of the five
regular polyhedral compounds. This
compound polyhedron is also a
stellation of the
regular icosahedron. It was
first described...
