## {4,4}, square 1A2 + tromino 2A, solution 4
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,1,2,1,1,3)
# the Conway notation
conway("(0 3')(3 4')(1 0')(2 7')(1' 2')(6' 5')")
sublines(1)