Johnson Solids (Page 3)
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(J44)
Gyroelongated Triangular Bicupola
Vertices:
18 (6[4] + {6 * 2}[5])
Faces:
26 ({6 * 3 + 2} equilateral triangles + 6 squares)
Edges:
42
Symmetry:
3-fold Dihedral (D3)
(values below based on edge length = 1)
Volume:
sqrt(2*(34+9*sqrt(3)
+30*sqrt(1+sqrt(3))))/3
≈4.6945643929158936762