21) cubitruncated cuboctahedron 4/3 3 4| [52,79] dual: tetradyakishexahedron (8/3.6.8), octahedral group S4, χ=-4, D=4 V=48, E=72, F=20=6{8}+8{6}+6{8/3} α γ a b c ρ/R r/ρ l/ρ h/r {8} 22.5 86.2897 22.21 80.99 80.26 0.925820 0.169102 0.408248 5.828427 {6} 30.0 69.2952 22.21 49.11 45.00 0.925820 0.707107 0.408248 1.000000 {8/3} 67.5 24.4152 22.21 24.15 9.74 0.925820 0.985599 0.408248 0.171573