On the dual of tiling T3636 these are the Adjacent directions:
![[Image: pic5756381.png]](https://cf.geekdo-images.com/hp3C3ymoyKLvbJsfZzANqA__imagepage/img/b8-xbXXWvHjc6-NHOYthZYW7gEw=/fit-in/900x600/filters:no_upscale():strip_icc()/pic5756381.png)
These are the Orthogonal directions:
![[Image: pic5756382.png]](https://cf.geekdo-images.com/Lshz7o2I0G02pHIEeBfvxg__imagepage/img/1AMk3nizvlx53zxCEAAQVUU5V9w=/fit-in/900x600/filters:no_upscale():strip_icc()/pic5756382.png)
But this is (difference Adjacent Orthogonal):
![[Image: pic5756380.png]](https://cf.geekdo-images.com/KcbiVcKhy8hqKhRxvaLF8w__imagepage/img/dPxuL7F0r8_d7iP0b-pCXHc4Nb8=/fit-in/900x600/filters:no_upscale():strip_icc()/pic5756380.png)
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.
![[Image: pic5756381.png]](https://cf.geekdo-images.com/hp3C3ymoyKLvbJsfZzANqA__imagepage/img/b8-xbXXWvHjc6-NHOYthZYW7gEw=/fit-in/900x600/filters:no_upscale():strip_icc()/pic5756381.png)
These are the Orthogonal directions:
![[Image: pic5756382.png]](https://cf.geekdo-images.com/Lshz7o2I0G02pHIEeBfvxg__imagepage/img/1AMk3nizvlx53zxCEAAQVUU5V9w=/fit-in/900x600/filters:no_upscale():strip_icc()/pic5756382.png)
But this is (difference Adjacent Orthogonal):
![[Image: pic5756380.png]](https://cf.geekdo-images.com/KcbiVcKhy8hqKhRxvaLF8w__imagepage/img/dPxuL7F0r8_d7iP0b-pCXHc4Nb8=/fit-in/900x600/filters:no_upscale():strip_icc()/pic5756380.png)
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.