## {4,4}, tetromino 1F (I), solution 1
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,2,2,2,1,1,2,2,2)
# the Conway notation
conway("(0)(1)(2 9)(3 8)(4 7)[5 6]")
sublines(1)