The augmented tridiminished icosahedron is Johnson solid , which is formed from augmentation of the triangular face adjecent to all three hexagons of the tridiminished icosahedron by an equilateral triangular pyramid (i.e., a regular tetrahedron). The solid and net are illustrated above.
Augmented Tridiminished Icosahedron
See also
Augmentation, Augmented Polyhedron, Diminished Polyhedron, Johnson Solid, Tridiminished IcosahedronExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Augmented Tridiminished Icosahedron." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/AugmentedTridiminishedIcosahedron.html