Self-Intersecting Quasi-Quasi-Regular Polyhedra

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(Uniform #67) Uniform Great Rhombicosidodecahedron
Vertices:  60  (60[4])
Faces:62  (20 equilateral triangles + 30 squares
    + 12 regular pentagrams)
Edges:120
Symmetry:  Full Icosahedral  (Ih)
Square-Triangle Angle:  acos((sqrt(15)−sqrt(3))/6)    ≈69.094842552 degrees
Pentagram-Square Angle:  acos(sqrt(10*(5−sqrt(5)))/10)    ≈301.717474411 degrees
Dual Solid:  Great Deltoidal Hexecontahedron
(values below based on edge length = 1)
Circumscribed Radius:  sqrt(11−4*sqrt(5))/2    ≈0.71689052337174209824
Midscribed Radius:  sqrt(2*(5−2*sqrt(5)))/2    ≈0.51374314837300779674
Square Center Radius:  (sqrt(5)−2)/2    ≈0.11803398874989484820
Triangle Center Radius:  (2*sqrt(15)−3*sqrt(3))/6    ≈0.42496904495136698163
Pentagram Center Radius:  3*sqrt(5*(5−2*sqrt(5)))/10    ≈0.48737954434935948923


References:[1]Jean Paul Albert Badoureau, Mémoire sur les Figures Isocèles,
Journal de l'École polytechnique 49 (1881), 47-172.