29) icosidodecahedron 2|3 5 [28,12] dual: rhombic triacontahedron (3.5.3.5), icosahedral group A5, χ=2, D=1 V=30, E=60, F=32=12{5}+20{3} α γ a b c ρ/R r/ρ l/ρ h/r {5} 36.0 58.2825 18.00 31.72 26.57 0.951057 0.894427 0.324920 0.500000 {3} 60.0 31.7175 18.00 20.91 10.81 0.951057 0.982247 0.324920 0.190983