Rectified Archimedean Solids
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Rectified Truncated Tetrahedron
derived form
Vertices:
18 (12[4] + 6[4])
Faces:
20 (4 regular hexagons + 4 equilateral triangles
+ 12 isosceles triangles)
Edges:
36 (12 short + 24 long)
Symmetry:
Full Tetrahedral (Td)
(values below based on short edge length = 1)
Short Edge (12):
1
Long Edge (24):
sqrt(3)
≈1.73205080756887729353
Circumscribed Radius:
3*sqrt(2)/2
≈2.1213203435596425732
Volume:
43*sqrt(2)/3
≈20.270394394014362366