## {4,4}, domino 1A1 + domino 1A1, solution 5
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,2,1,1,2)
unittile(1,1,2,1,1,2)
# the Conway notation
conway("(0)(5)(1 4)(2 2')(3 3')(0' 5')(1' 4')")
sublines(1)