Biscribed Non-Chiral Solids

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Biscribed Pentakis Dodecahedron
biscribed form
Vertices:  32  (12[5] + 20[6])
Faces:60  (isosceles triangles)
Edges:90  (60 short + 30 long)
Symmetry:  Full Icosahedral  (Ih)
Short Edge Angle:  acos(−(255*sqrt(5)−7    
    +sqrt(6*(5105+2099*sqrt(5))))/898)    
≈153.789590509 degrees
Long Edge Angle:  acos(−(560−195*sqrt(5)    
    +12*sqrt(15*(1205+298*sqrt(5))))/2245)    
≈161.946011928 degrees
Dual Solid:  Biscribed Truncated Icosahedron
(values below based on circumscribed radius = 1)
Short Edge (60):  sqrt(30*(15−sqrt(15*(5+2*sqrt(5)))))/15    ≈0.64085182017098754129
Long Edge (30):  (sqrt(15)−sqrt(3))/3    ≈0.71364417954617986388
Circumscribed Radius:  1
Inscribed Radius:  1/sqrt(10−sqrt(5)−sqrt(6*(5+sqrt(5))))    ≈0.92260219454398946762
Volume:2*sqrt(10*(5−sqrt(5)))/3    ≈3.5048740807942240402