Great Icosahedron
One of the Kepler-Poinsot Solids whose Dual is the GreatStellated Dodecahedron. Its faces are 
. It is also Uniform Polyhedron 
and has Wythoff Symbol
. Its faces are 
. Its Circumradius for unit edgelength is
See also Great Dodecahedron, Great Stellated Dodecahedron, Kepler-Poinsot Solid, Small StellatedDodecahedron, Truncated Great Icosahedron
References
Fischer, G. (Ed.). Plate 106 in Mathematische Modelle/Mathematical Models, Bildband/Photograph Volume. Braunschweig, Germany: Vieweg, p. 105, 1986. Wenninger, M. J. Polyhedron Models. Cambridge, England: Cambridge University Press, p. 154, 1989.
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