Compute the points at the end of the arc edge, the point at the center of the slice and any of the four extreme points (angles 0, 90, 180 and 270) if they are contained within the sweep angle. Then all you have to do is iterate over all the points and find the minimum and maximum x and y values.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.