Pentagrammic Prism C0 = 0.162459848116453163077935706108 = sqrt(5 * (5 - 2 * sqrt(5))) / 10 C1 = 0.309016994374947424102293417183 = (sqrt(5) - 1) / 4 C2 = 0.425325404176019966090770248532 = sqrt(10 * (5 + sqrt(5))) / 20 C3 = 0.525731112119133606025669084848 = sqrt(10 * (5 - sqrt(5))) / 10 V0 = ( 0.0, C3, 0.5) V1 = ( 0.0, C3, -0.5) V2 = ( 0.5, C0, 0.5) V3 = ( 0.5, C0, -0.5) V4 = ( C1, -C2, 0.5) V5 = ( C1, -C2, -0.5) V6 = (-0.5, C0, 0.5) V7 = (-0.5, C0, -0.5) V8 = ( -C1, -C2, 0.5) V9 = ( -C1, -C2, -0.5) Faces: { 0, 8, 2, 6, 4 } { 1, 5, 7, 3, 9 } { 0, 1, 9, 8 } { 8, 9, 3, 2 } { 2, 3, 7, 6 } { 6, 7, 5, 4 } { 4, 5, 1, 0 }