Johnson Solids (Page 2)
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(J22)
Gyroelongated Triangular Cupola
Vertices:
15 ({3 * 3}[4] + 6[5])
Faces:
20 ({6 + 3 * 3 + 1} equilateral triangles + 3 squares
+ 1 regular hexagon)
Edges:
33
Symmetry:
3-fold Pyramidal (C3v)
(values below based on edge length = 1)
Volume:
sqrt(2*(61+36*sqrt(3)
+60*sqrt(1+sqrt(3))))/6
≈3.5160530909383144689