Constructing Polyhedra Using the Icosahedral Group
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An equilateral triangle can be rotated onto itself. The cyclic group describes such actions. Adding mirror images gives the dihedral group
. All are subgroups of the infinite special orthogonal group SO(2), also known as the group of 2×2 rotation matrices.
Contributed by: Izidor Hafner (September 2011)
Additional code by Ed Pegg Jr
Open content licensed under CC BY-NC-SA
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