## {3,13}, pentiamond 2, solution 9
h2.
angleunit(2*pi/13)
# the line below lets us specify internal angles
angleofs(pi)
distunit(edge(3,13))
unittile(1,2,3,1,3,1,4)
# the Conway notation
conway("(0 1)[2 5](3 4)(6)")
sublines(1)