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