Self-Intersecting Quasi-Quasi-Regular Duals

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Small Hexacronic Icositetrahedron
Vertices:  20  (8[3] + 6[4] + 6[8])
Faces:24  (darts)
Edges:48  (24 short + 24 long)
Symmetry:  Full Octahedral  (Oh)
Dihedral Angle:  acos(−(7+4*sqrt(2))/17)    ≈138.117959056 degrees
Dual Solid:  Small Cubicuboctahedron
(values below based on unit-edge-length Small Cubicuboctahedron)
Short Edge (24):  2*sqrt(2*(26+17*sqrt(2)))/7    ≈2.8583320542408706014
Long Edge (24):  2*sqrt(2+sqrt(2))    ≈3.69551813004514702451
Dart Length:  2*sqrt(31−8*sqrt(2))/7    ≈1.2676924722362712507
Dart Width:  2*(1+sqrt(2))    ≈4.8284271247461900976
[3]-Vertex Radius (8):  (4*sqrt(3)+sqrt(6))/7    ≈1.3396704247226696103
[4]-Vertex Radius (6):  sqrt(2)    ≈1.4142135623730950488
[8]-Vertex Radius (6):  2+sqrt(2)    ≈3.4142135623730950488
Edge-scribed Radius:  sqrt(2*(2+sqrt(2)))/2    ≈1.3065629648763765279
Inscribed Radius:  sqrt(34*(7+4*sqrt(2)))/17    ≈1.2202629537976100741