1000
The medial triambic icosahedron is the dual of the ditrigonal dodecadodecahedron 
and Wenninger dual 
, whose outward appearance is the same as the great
triambic icosahedron (the dual of the great
ditrigonal icosidodecahedron), since the internal vertices are hidden from view.
The medial triambic icosahedron has hidden pentagrammic faces, while the great
triambic icosahedron has hidden triangular faces (Wenninger 1983, pp. 45
and 47-50).
The convex hull of the small ditrigonal icosidodecahedron is a regular dodecahedron, whose dual is the icosahedron, so the dual of the small ditrigonal icosidodecahedron (i.e., the medial triambic icosahedron) is one of the icosahedron stellations (Wenninger 1983, p. 42).
