Thanks Schfifty Five
Can you explain this a little.

circ.x = centerX + i * Math.cos((i/20)*Math.PI*2) * 70;

I presume 70 is the radius but not sure why i / 20.
*Math.PI*2 is multiplying by 360 right or the full circle which is Math.PI * 2

Is there somewhere where I can read up on plotting points with cos and sin that shows me how to plot points that are like this and not just in a circle like most tutorials.