Great ditrigonal dodecacronic hexecontahedron
In geometry, the great ditrigonal dodecacronic hexecontahedron (or great lanceal trisicosahedron) is a nonconvex isohedral polyhedron. It is the dual of the uniform great ditrigonal dodecicosidodecahedron. Its faces are kites. Part of each kite lies inside the solid, hence is invisible in solid models. Proportions. Kite faces have two angles of formula_1, one of formula_2 and one of formula_3. Its dihedral angles equal formula_4. The ratio between the lengths of the long edges and the short ones equals formula_5.