Elk P. answered 05/05/19
Host of Film Series, Professor
This is a toughie. I think what they're trying to get you to think about all the different ways you can fold the corners versus the sides of the paper. For instance, whether to connect the corners to each other or to fold edge-to-edge. I agree the wording is pretty opaque, but I also assume people writing math problems don't necessarily know all the right terms to describe the art of origami! Of course a mathematician wouldn't say "corners" of paper but instead "vertices"; they've probably never done origami before in real life, since this is a conceptual geometry question. Let me know if that was helpful, and best of luck!
-Elk