"Just relax. Find your center." Caddyshack (1980) It seems like a pretty simple task, doesn't it? I bet a lot of people (myself included) are confident that they can eyeball a good center point. But eyeballing isn't exact and sometimes you need to be exact. So how does one find an exact center on an existing circle? It's actually not very difficult and there are multiple ways to do it. Here are a few of the simplest methods. Method 1: Chords First, let's define a "chord." A chord is any straight line whose endpoints are both on a circle. (The infinite line extension of a…