Johnson Solids (Page 1)
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(J3)
Triangular Cupola
Vertices:
9 (6[3] + 3[4])
Faces:
8 ({3 + 1} equilateral triangles + 3 squares + 1 regular hexagon)
Edges:
15
Symmetry:
3-fold Pyramidal (C3v)
(values below based on edge length = 1)
Volume:
5*sqrt(2)/6
≈1.1785113019775792073