Describe a circle as an ellipse?? An ellipse is a stretched circle. Can you describe a circle as an ellipse? If so, what are the foci of the circle? What are the lengths of the minor and major axis? Would this circle satisfy the locus definition of an ellipse? I really dont know how a circle can be described as an ellipse. If it is possible then how will I find the foci and lengths? There are no numbers? What acutally is the locus definition of an ellipse? Please help me get started I dont know what to do.