An Archimedean Solid also (inappropriately) called the Truncated Icosidodecahedron. This name is inappropriate
since truncation would yield rectangular instead of square faces. Its Dual Polyhedron is the Deltoidal
Icositetrahedron, also called the Trapezoidal Icositetrahedron. It has Schläfli Symbol
r
. It is also Uniform Polyhedron and has Wythoff Symbol . Its
Inradius, Midradius, and Circumradius for are

A version in which the top and bottom halves are rotated with respect to each other is known as the Elongated Square Gyrobicupola.

**References**

Ball, W. W. R. and Coxeter, H. S. M. *Mathematical Recreations and Essays, 13th ed.* New York:
Dover, pp. 137-138, 1987.

© 1996-9

1999-05-26