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

#bongardproblem #mathpuzzle #puzzle #visualmath

Was this so easy to be boring? :-) (The next one will be is easy as well).

My solution to Aaron 69: in each box there are three vectors with the same length, every one in a different direction, so they represent angles, where zero is represented with a hand laying flat toward the right and they rotate counter-clockwise. In every left box the angles represented are a, b, c where c = a+b.

#bongardproblem #mathpuzzle #puzzle #visualmath