## {4,4}, pentomino 12 (P), solution 19 e2. angleunit(pi/2) # the line below lets us specify internal angles angleofs(pi) unittile(1,1,2,2,1,2,1,2,1,3) # the Conway notation conway("(0 8)(1 6)(2 4)(3)(5)(7)(9)") sublines(1) sublines(2)