## {4,4}, pentomino 5 (R), solution 15
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,2,1,3,1,1,3,1,1,2,3)
# the Conway notation
conway("[0 4][1 5][2 10][3 11](6)(7 9)(8)")
sublines(1)