## {4,4}, domino 1R + domino 1R, solution 1
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)(3)(1 0')(4 3')(2 1')(5 4')(2')(5')")
sublines(1)