Archimedean Solids

(box: x-ray)  (F: faces)  (slider: perspective)  (image: L=rotate R=zoom)  (M: metrics)

(Uniform #2) Truncated Tetrahedron
Vertices:  12  (12[3])
Faces:8  (4 equilateral triangles + 4 regular hexagons)
Edges:18
Symmetry:  Full Tetrahedral  (Td)
Hexagon-Hexagon Angle:  acos(1/3)    ≈70.528779366 degrees
Hexagon-Triangle Angle:  acos(−1/3)    ≈109.471220634 degrees
Dual Solid:  Triakis Tetrahedron
(values below based on edge length = 1)
Circumscribed Radius:  sqrt(22)/4    ≈1.1726039399558573886
Midscribed Radius:  3*sqrt(2)/4    ≈1.0606601717798212866
Hexagon Center Radius:  sqrt(6)/4    ≈0.612372435695794524549
Triangle Center Radius:  5*sqrt(6)/12    ≈1.0206207261596575409
Volume:23*sqrt(2)/12    ≈2.7105759945484321769