In geometry, the medial icosacronic hexecontahedron (or midly sagittal ditriacontahedron) is a nonconvex isohedral polyhedron. It is the dual of the uniform icosidodecadodecahedron. Its faces are darts. Part of each dart lies inside the solid, hence is invisible in solid models.
Faces have two angles of
\arccos( | 3 |
4 |
) ≈ 41.40962210927\circ
\arccos(- | 1 | + |
8 |
7 | |
24 |
\sqrt{5}) ≈ 58.18444611759\circ
360\circ-\arccos(-
1 | - | |
8 |
7 | |
24 |
\sqrt{5}) ≈ 218.99630966387\circ
\arccos(- | 5 |
7 |
) ≈ 135.58469140281\circ
27+7\sqrt{5 | |