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Dodecahedron
In
geometry
, a
dodecahedron
(Greek , from
dodeka
"twelve" +
hédra
"base", "seat" or "face") is any
polyhedron
with twelve flat faces. The most familiar dodecahedron is the
regular dodecahedron
, which is a
Platonic solid
. There are also three
regular star dodecahedra
, which are constructed as
stellations
of the convex form. All of these have
icosahedral symmetry
, order 120.
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