Great icosacronic hexecontahedron

In geometry, the great icosacronic hexecontahedron (or great sagittal trisicosahedron) is the dual of the great icosicosidodecahedron.

Its faces are darts.

A part of each dart lies inside the solid, hence is invisible in solid models.

Faces have two angles of

arccos ⁡ (

arccos ⁡ ( −

− arccos ⁡ ( −

Its dihedral angles equal

arccos ⁡ (

The ratio between the lengths of the long and short edges is

Weisstein, Eric W. "Great icosacronic hexecontahedron".

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