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