Propellor Solids

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Propello Icosahedron (canonical)
canonical form
Vertices:  72  (60[4] + 12[5])
Faces:80  (20 equilateral triangles + 60 tri-equiangular kites)
Edges:150  (90 short + 60 long)
Symmetry:  Chiral Icosahedral  (I)
Dual Solid:  Propello Dodecahedron
(values below based on edge-scribed radius = 1)
Short Edge (90):  sqrt(root[10th-order polynomial])    ≈0.37761607513158906023
Long Edge (60):  sqrt(root[10th-order polynomial])    ≈0.50586201505017064514
Edge-scribed Radius:  1
Volume:root[10th-order polynomial]    ≈4.1106116940041802159


References:[1]Sculpture Based on Propellorized Polyhedra (George Hart)