Equal areas of a circle gives nice art
By Murray Bourne, 01 May 2008
CTK Insights has an interesting post Dividing circular area into equal parts using a pair of compasses and a ruler, complete with proof. [That post is no longer available.]
I applied the process given and divided my circle into 5 equal parts (the semi-circles have centres on the diameter of the large circle, and each semi-circle is a multiple of 1/5 of the large diameter).
Here it is, using squareCircleZ colors: π
See the 2 Comments below.