## {4,4}, pentomino 7 (N), solution 15
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,2,1,3,2,1,1,2,2,1,3)
# the Conway notation
conway("(0 3)[1 8][2 7](4 11)(5 10)(6 9)")
sublines(1)