Is circle subset of the ellipse?
Circle can be considered as ellipse in Kepler's planetary law...
The general equation for an ellipse "contains" the equation for a circle, depending on the constants chosen. The eccentricity as determined by the equation shows whether or not it is a circle.
now if you went to class you would have known the answer to that... wouldnt u!!!!
this is a good time for wikipedia XD
A circle is an ellipse with both centrists in the same place.