View source for Platonic solids

The name given to five convex [[Regular polyhedra|regular polyhedra]]: the [[Tetrahedron|tetrahedron]], the [[Cube|cube]], the [[Octahedron|octahedron]], the [[Dodecahedron|dodecahedron]], and the [[Icosahedron|icosahedron]]. The names of the polyhedra are Plato's names, who in his Timei (4th century B.C.) assigned them a mystical significance; they were known before Plato.

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====References====
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<TR><TD valign="top">[a1]</TD> <TD valign="top">  H.S.M. Coxeter,   "Regular polytopes" , Macmillan  (1963)  {{ZBL|0118.35902}}</TD></TR>
<TR><TD valign="top">[a2]</TD> <TD valign="top">  D. Hilbert,   S.E. Cohn-Vossen,   "Geometry and the imagination" , Chelsea  (1952)  pp. 90ff  (Translated from German)  {{ZBL|0047.38806}}</TD></TR>
</table>