## {3,7}, diamond 1A2 + triamond 3A
h2.
angleunit(2*pi/7)
# the line below lets us specify internal angles
angleofs(pi)
distunit(edge(3,7))
unittile(1,2,1,2)
unittile(1,2,2,1,3)
# the Conway notation
conway("(0 1)(2 4')(3 0')(1')(3')(2')")
sublines(1)