- 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...
-
regular dodecahedron has edge
length 1, its dual
icosahedron has edge
length ϕ. If the five
Platonic solids are
built with same volume, the
regular dodecahedron...
- (Smith, 1982, p212), of
which there are 48.
Neither the
regular icosahedron nor the
regular dodecahedron are
amongst them, but
crystals can have the...
- In geometry, the
great icosahedron is one of four Kepler–Poinsot
polyhedra (nonconvex
regular polyhedra), with Schläfli
symbol {3,5⁄2} and Coxeter-Dynkin...
- 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...
-
truncated icosahedron is an
Archimedean solid, one of 13
convex isogonal nonprismatic solids whose 32
faces are two or more
types of
regular polygons....
-
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...
-
icosahedron can be
formed by
gluing triangular pyramids to each face of a
regular icosahedron.
Depending on the
height of
these pyramids relative to
their base...
- to the
great icosahedron {3, 5/2}. All of
these regular star
dodecahedra have
regular pentagonal or
pentagrammic faces. The
convex regular dodecahedron...
