Hey, I'm guessing this might be as good a place as any on this forum to ask for some ideas. So every week me and friends play a soccer game at a local field. It's basically an empty field and we create our own field of play within it with cones. We have 4 cones, one for each corner of the field. Then portable goals are placed in the middle of either end. The field we make usually ends up being about 40 by 50 yards (37 by 45 meters). The problem is that every week, we're dissatisfied by the shape of the field. We usually end up with a trapezoid. Then people disagree on how to fix it! I was wondering if you could think of a method to create 4 right angles with cones preferably conforming to the following constraints: 1. No long strings, or tools used. 2. One person can do it. 3. Field size and area need to be roughly the previously mentioned parameters (in case this would be a factor) This is both something that I would like to figure out in general, and an exercise (for me) in seeing if it's even possible to do something like this semi-accurately without tools. Ultimately, if you have simple ideas with tools, then that's fine too :) Thanks!