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