Johnson Solids (Page 3)
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(J58)
Augmented Dodecahedron
Vertices:
21 ({5 * 3}[3] + 5[4] + 1[5])
Faces:
16 (5 equilateral triangles + {5 * 2 + 1} regular pentagons)
Edges:
35
Symmetry:
5-fold Pyramidal (C5v)
(values below based on edge length = 1)
Volume:
(95+43*sqrt(5))/24
≈7.9646217930204565394