-
triangle faces with five
meeting at each of its
twelve vertices. Both have
icosahedral symmetry. The term "regular icosahedron"
generally refers to the convex...
- an
object has
icosahedral symmetry if it has the same
symmetries as a
regular icosahedron.
Examples of
other polyhedra with
icosahedral symmetry include...
- In geometry, the
icosahedral honeycomb is one of four compact, regular, space-filling
tessellations (or honeycombs) in
hyperbolic 3-space. With Schläfli...
- The
icosahedral pyramid is a four-dimensional
convex polytope,
bounded by one
icosahedron as its base and by 20
triangular pyramid cells which meet at...
- vertices. It is an
example of a
Platonic solid and of a deltahedron. The
icosahedral graph represents the
skeleton of a
regular icosahedron. Many polyhedra...
- structure. The
majority of the
viruses have
capsids with
either helical or
icosahedral structure. Some viruses, such as bacteriophages, have
developed more...
- a
local icosahedral order. The
icosahedral order is in
equilibrium in the
liquid state for the
stable quasicrystals,
whereas the
icosahedral order prevails...
- in a vertex. It has the same
symmetry as the
regular icosahedron, the
icosahedral symmetry, and it also has the
property of vertex-transitivity. The polygonal...
- In mathematics, an
icosahedral number is a
figurate number that
represents an icosahedron. The nth
icosahedral number is
given by the
formula n ( 5 n...
- mathematics, the
binary icosahedral group 2I or ⟨2,3,5⟩ is a
certain nonabelian group of
order 120. It is an
extension of the
icosahedral group I or (2,3,5)...
