## {3,7}, diamond 1F + triamond 3F, solution 4
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')(2 4')[3 3'](0' 1')")
sublines(1)