Geodesic Icosahedra Duals

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Dual Geodesic Icosahedron Pattern 2 [2,0]
(Chamfered Dodecahedron)
Vertices:  80  (20[3] + 60[3])
Faces:42  (12 regular pentagons + 30 bi-mirror-symmetric hexagons)
Edges:120  (60 short + 60 long)
Symmetry:  Full Icosahedral  (Ih)
Dual Solid:  Geodesic Icosahedron Pattern 2 [2,0]
(values below based on edge-scribed radius = 1)
Short Edge (60):  (sqrt(5)−3+2*sqrt(5−2*sqrt(5)))/2    ≈0.34457651675525573410
Long Edge (60):  sqrt(5−2*sqrt(5))/2    ≈0.363271264002680442948
Edge-scribed Radius:  1
Volume:(37*sqrt(5)−75+4*sqrt(10*(25−11*sqrt(5))))/4    ≈3.94174295073532749048