Recently, due to my newfound obsession with circles and Pi, I came across an idea that may or may not hold up, and I need some feedback on it. It occured to me that a polygon with a sufficient number of angles could closely resemble a circle. For example, let's say you have a regular polygon with 1 billion sides. each interior angle is roughly 179.999 degrees, which makes the angles almost unnoticeable at all unless you have an implement of measuring. If you actually had a drawing of a billion sided regular polygon, it would look like a circle unless you measured it. I have also come to the conclusion that it would make sense that the any single interior angle can never be exactly 180 degrees, as it would be a straight line. You could get extremely close to 180 degrees, but never reach it. To tie this in more with the circles, I assumed that perhaps a circle could be loosely described as a polygon with an infinite number of sides. Perhaps I am wrong in this assumption, but it kinda makes sense to me. I apologize if this is common math knowledge or if I am wrong, I just like to throw ideas that I think of during the day around.