Johnson Solids (Page 5)
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(J89)
Hebesphenomegacorona
Vertices:
14 (4[4] + {4 + 2 * 3}[5])
Faces:
21 ({4 * 3 + 2 * 3 equilateral triangles + {2 + 1} squares)
Edges:
33
Symmetry:
2-fold Pyramidal (C2v)
(values below based on edge length = 1)
Volume:
sqrt(root[10th-order polynomial])
≈2.9129104145402091660