## {3,9}, triangle 1S + triangle 1A, solution 1
h2.
angleunit(2*pi/9)
# the line below lets us specify internal angles
angleofs(pi)
distunit(edge(3,9))
unittile(1,1,1)
unittile(1,1,1)
# the Conway notation
conway("(0 0')(1 0')(2 0')(1' 2')")
sublines(1)