The diameter of the circle is given an arbitrary value of 1 ... was able to figure out the length of the perimeter of a hexagon. Second, we use decimal notation, which wasn't invented until ...

Image caption, STEP 4: Using a pen, place a dot at every point where the arcs cross the circle. Use a ruler and pen to join the dots – you now have a regular hexagon. Image caption, Use a ruler ...

By doubling the number of sides of the hexagon to a 12-sided polygon ... ever closer in length to the circumference of the circle and thereby come up with his approximation.