This is Aaron David Fairbanks Bongard problem problem n. 69. I grouped them so they are simpler to solve. Try to write your solution (with a spoiler if you want). I'll give my solution in one or two days.
For more info about Bongard problems in general take a look at my first messages:
https://mathstodon.xyz/@leonardom/116110015131667314
https://mathstodon.xyz/@leonardom/116110093951382315
