# Talk:Equation of Circle

I think it's as simple as multiplying out $\left({x-a}\right)^2 + \left({y-b}\right)^2 = R^2$. The general ellipse is more fiddly and in order to do it justice we need to bring on board linear transformations (specifically rotations) and it gets messy. I'll go there once I've done the fiendishly technical Mathematical Logic in which I'm building up to Godel. --Prime.mover 21:54, 2 May 2009 (UTC)