Why are these two so different? They're both made up of angles and straight lines, yet they have two distinct systems for approaching them. Drawing a perfect circle in theory seems like it should be as easy as drawing a perfect square, but we measure it using a transcendent value. Is it because human hands aren't adapted for rotation, or is it because of the tools we use that its difficult?. A circle is a limit in all possible rotational angles, but a square could be represented the same with a different tool. Its still considered to have finite sides as opposed to the circle though.