On the dual of tiling T3636 these are the Adjacent directions:
These are the Orthogonal directions:
But this is (difference Adjacent Orthogonal):
Why aren't 131 and 88 included in (difference Adjacent Orthogonal)?
I have attached a .lud where it is easy to test this for oneself.
Edit: Also compare Diagonal and something like (difference Diagonal N). (difference Diagonal N) returns many more directions than Diagonal.
These are the Orthogonal directions:
But this is (difference Adjacent Orthogonal):
Why aren't 131 and 88 included in (difference Adjacent Orthogonal)?
I have attached a .lud where it is easy to test this for oneself.
Edit: Also compare Diagonal and something like (difference Diagonal N). (difference Diagonal N) returns many more directions than Diagonal.