Situation: I am standing on a stool and there are bookshelves on my right and I am searching through the bookshelf in front of me.
Alternative situations: I wanted a book that was too high to stand on top of the stool to reach that high place on the bookshelf. Standing at my bookshelf, looking for a book to read.
Question: Is the shape of the stool I am standing on closer to that of a circle or a triangle?