57) great stellated dodecahedron 3|2 5/2 [68,22] dual: great icosahedron (5/2.5/2.5/2), icosahedral group A5, χ=2, D=7 V=20, E=30, F=12=12{5/2} α γ a b c ρ/R r/ρ l/ρ h/r {5/2} 72.0 60.0000 69.09 79.19 58.28 0.356822 0.525731 2.618034 1.618034