Does anyone know that the circumference of a circle was originally calculated by taking a large number of sides of a regular polygon and calculating the perimeter of the polygon. It was then divided by the distance of the segment through the center of the polygon. As the number of sides of the polygon increases, the distance of the side decreases and the polygon looks more and more like a circle and the value of Pi gets closer and closer to 3.1415916....  


No matter how large a circle is, the circumference divided by the diameter is equal to Pi.