As a matter of interest only:

Although Fred's method creates a 'circle' it is not an exact circle. The shape is very circular but not a true circle. But then again neither is a circle created by the ellipse tool. To test this out zoom to 10%, create the largest circle you can which is still totally visible. I created on one 7000 x 7000 px. Now rotate it 22.5 degrees, it becomes 6997.9 x 6997.9, two pixels smaller, how can this be, shock, horror

Can anyone confirm my video is streaming. I can see it but several hours later Acorn cannot.