## {4,4}, pentomino 10 (Y), solution 11
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 5)(1 9)(2 8)(3 7)(4 10)(6 11)")
sublines(1)