## {3,6}, triamond 1F + triamond 1F, solution 21
e2.
angleunit(pi/3)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,2,2,1,3)
unittile(1,2,2,1,3)
# the Conway notation
conway("(0 2)(1)(3 0')(4 1')(2' 4')[3']")
sublines(1)