Johnson Solids (Page 2)
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(J36)
Elongated Triangular Gyrobicupola
Vertices:
18 ({12 + 6}[4])
Faces:
20 ({6 + 2} equilateral triangles + {6 * 2} squares)
Edges:
36
Symmetry:
3-fold Antiprismatic (D3v)
(values below based on edge length = 1)
Volume:
(10*sqrt(2)+9*sqrt(3))/6
≈4.95509881530847435496