:name square antiprism :number 27 :symbol @S sub 4 @ :sfaces 10 8{3} 2{4} :svertices 8 8(@3 sup 3@.@4@) :net 10 4 4 8 4 3 7 4 5 9 10 6 3 0 1 2 3 2 1 4 3 2 4 5 3 5 4 8 3 5 8 9 3 9 8 11 3 9 11 12 3 12 11 13 :solid 10 4 4 17 14 18 21 4 15 19 20 16 3 20 18 16 3 16 18 14 3 16 14 15 3 15 14 17 3 15 17 19 3 19 17 21 3 19 21 20 3 20 21 18 :hinges 9 2 1 3 0 2.2261954369024298 3 2 4 0 2.2261954369024298 4 1 5 0 2.2261954369024298 5 2 6 0 2.2261954369024298 6 1 7 0 2.2261954369024298 7 2 8 0 2.2261954369024298 8 1 9 0 2.2261954369024298 0 0 5 1 1.8122828829922387 1 0 6 2 1.8122828829922387 :dih 2 8 3 3 2.2261954369024298 8 3 4 1.8122828829922387 :vertices 22 14 -.5[-1/2] .288675134595[(1/6)*sqrt(3)] 0[0] 0[0] -.57735026919[(-1/3)*sqrt(3)] 0[0] .5[1/2] .288675134595[(1/6)*sqrt(3)] 0[0] 1[1] -1.57735026919[(-1+(-1/3)*sqrt(3))] 0[0] 1[1] -.57735026919[(-1/3)*sqrt(3)] 0[0] 1.5[3/2] .288675134595[(1/6)*sqrt(3)] 0[0] 1.5[3/2] 1.28867513459[(1+(1/6)*sqrt(3))] 0[0] 2[2] -1.57735026919[(-1+(-1/3)*sqrt(3))] 0[0] 2[2] -.57735026919[(-1/3)*sqrt(3)] 0[0] 2.5[5/2] .288675134595[(1/6)*sqrt(3)] 0[0] 2.5[5/2] 1.28867513459[(1+(1/6)*sqrt(3))] 0[0] 3[3] -.57735026919[(-1/3)*sqrt(3)] 0[0] 3.5[7/2] .288675134595[(1/6)*sqrt(3)] 0[0] 4[4] -.57735026919[(-1/3)*sqrt(3)] 0[0] -2.1213203435601172 1.126879092046195 -2.2140745111919036 -1.9142135623736646 .62687909204623441 -1.3731780959375639 -1.9142135623734633 1.6268790920449845 -1.3731780959376488 -1.4142135623736645 .41977231085955251 -2.2140745111918236 -1.4142135623735221 1.8339858732325055 -2.2140745111920117 -.91421356237366456 .62687909204623431 -1.3731780959375639 -.91421356237373159 1.6268790920448502 -1.3731780959376487 -.7071067811871643 1.1268790920461476 -2.2140745111919317 :EOF .