1. The problem statement, all variables and given/known data Is it true that the if you slice a circle into two segments, you can think of one of the pieces as being half an ellipse? 2. Relevant equations 3. The attempt at a solution Not sure, I was just thinking about this! Not really any idea how to proceed to a solution, or how I can apply the definition of an ellipse (fixed distance from foci..) to solve.