Truncated Catalan Solids

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6-Truncated Triakis Tetrahedron
(circumscribed)
version 3
Vertices:  28  (4[3] + 24[3])
Faces:16  (12 mirror-symmetric pentagons + 4 regular hexagons)
Edges:42  (18 short + 24 long)
Symmetry:  Full Tetrahedral  (Td)
(values below based on circumscribed radius = 1)
Short Edge (18):  2*sqrt(6)/9    ≈0.544331053951817355154952
Long Edge (24):  4*sqrt(2)/9    ≈0.62853936105470891058
Circumscribed Radius:  1
Volume:1288*sqrt(3)/729    ≈3.0601940194083867683