700
The great triambic icosahedron is the dual of the great ditrigonal icosidodecahedron 
and Wenninger model 
whose appearance is the same as the medial
triambic icosahedron (the dual of the ditrigonal
dodecadodecahedron), since internal vertices are hidden from view (Wenninger
1983, p. 42). The medial triambic
icosahedron has hidden pentagrammic faces, while the great triambic icosahedron
has hidden triangular faces (Wenninger 1983, pp. 45, 47, and 48-50).
The convex hull of the great ditrigonal icosidodecahedron is a regular dodecahedron, whose dual is the icosahedron, so the dual of the great ditrigonal icosidodecahedron (the great triambic icosahedron) is one of the icosahedron stellations (Wenninger 1983, p. 42).
