Simplest Canonical Polyhedra of Each Symmetry Type

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Simplest Canonical Polyhedron with D3v Symmetry
(1 of 2)
Vertices:  8  (2[3] + 6[5])
Faces:12  (6 equilateral triangles + 6 isosceles triangles)
Edges:18  (6 short + 12 long)
Symmetry:  3-fold Antiprismatic  (D3v)
Dual Solid:  Simplest D3v (2 of 2)
(values below based on edge-scribed radius = 1)
Short Edge (12):  2*(2−sqrt(2))    ≈1.1715728752538099024
Long Edge (2):  2
Edge-scribed Radius:  1
Volume:4  [EXACT]