So I wrote this Python script to do the math. Try it out below! Draw the best circle you can by dragging the yellow ball around the central white ball.

Watch him draw a perfect circle: You can also take your time, and use your thumb like a protractor, to draw an almost-perfect circle with a pencil, as this demonstration shows: ...

When you want to draw a round circle accurately, you need to use a tool such as a compass, and drawing it freehand in one shot is extremely difficult. ' Draw a Perfect Circle ' is a service that ...