12) cuboctahedron 2|3 4 [19,11] dual: rhombic dodecahedron (3.4.3.4), octahedral group S4, χ=2, D=1 V=12, E=24, F=14=6{4}+8{3} α γ a b c ρ/R r/ρ l/ρ h/r {4} 45.0 54.7356 30.00 45.00 35.26 0.866025 0.816497 0.577350 0.707107 {3} 60.0 35.2644 30.00 35.26 19.47 0.866025 0.942809 0.577350 0.353553