Greater Self-Dual Solids

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Self-Dual Tetracontahedron #5 (canonical)
Vertices:  40  (4[3] + 12[3] + 12[4] + 12[5])
Faces:40  (4 equilateral triangles + 12 isosceles triangles
    + 12 isosceles trapezoids + 12 mirror-symmetric pentagons)
Edges:78  (6 different lengths)
Symmetry:  Full Tetrahedral  (Td)
(values below based on edge-scribed radius = 1)
Edge 1 (12):  2*(2*sqrt(34)−7*sqrt(2))/19    ≈0.18551672137673006317
Edge 2 (12):  2*(119*sqrt(2)−4*sqrt(34))/731    ≈0.39662819792891137872
Edge 3 (12):  (27*sqrt(34)−85*sqrt(2))/76    ≈0.48983616261986886270
Edge 4 (12):  2*sqrt(34)/17    ≈0.68599434057003534951
Edge 5 (24):  3*(7*sqrt(34)−17*sqrt(2))/68    ≈0.74007497221652150587
Edge 6 (6):  (sqrt(34)−3*sqrt(2))/2    ≈0.79415560386300766223
Max Vertex Radius:  sqrt(17−3*sqrt(17))/2    ≈1.0759511052026270341
Edge-scribed Radius:  1
Volume:8*(17468873−2437208*sqrt(17))/15041787    ≈3.9463433350835949301