Johnson Solids (Page 3)
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(J51)
Triaugmented Triangular Prism
Vertices:
9 (3[4] + 6[5])
Faces:
14 ({6 * 2 + 2} equilateral triangles)
Edges:
21
Symmetry:
3-fold Prismatic (D3h)
(values below based on edge length = 1)
Volume:
(2*sqrt(2)+sqrt(3))/4
≈1.1401194830787668478