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GeoGebraGeoGebra Classroom

HSV colors Icosahedron

Setup

varphi = (1+sqrt(5))/2 A1 = (0, 1, varphi) A2 = (0, -1, -varphi) A3 = (0, 1, -varphi) A4 = (0, -1, varphi) A5 = (1, varphi, 0) A6 = (-1, -varphi, 0) A7 =(-1, varphi, 0) A8 =(1, -varphi, 0) A9 = (varphi, 0 , 1) A10 = (-varphi, 0 , -1) A11 = (varphi, 0 , -1) A12 = (-varphi, 0 , 1) # Centre T1 = Polygon(A1, A5, A7) T2 = Polygon(A1, A5, A9) T3 = Polygon(A9, A5, A11) T4 = Polygon(A9, A11, A8) T5 = Polygon(A8, A11, A2) T6 = Polygon(A8, A6, A2) T7 = Polygon(A6, A2, A10) T8 = Polygon(A10, A6, A12) T9 = Polygon(A12, A10, A7) T10 = Polygon(A12, A7, A1) # Top T11 = Polygon(A4, A1, A12) T12 = Polygon(A4, A12, A6) T13 = Polygon(A4, A6, A8) T14 = Polygon(A4, A8, A9) T15 = Polygon(A4, A9, A1) # Bottom T16 = Polygon(A3, A5, A7) T17 = Polygon(A3, A7, A10) T18 = Polygon(A3, A10, A2) T19 = Polygon(A3, A5, A11) T20 = Polygon(A3, A11, A2)

Colors

Execute(Zip("SetDynamicColor(T"+i+", "+i+"/20, 1, 1, 1)", i, 1...20))