hello sir i have a doubt in conic sections [ellipse]. what is the difference between an oval and an ellipse?

Dear student

 

All ellipses are ovals but all ovals cannot
be ellipses. Ellipse has two axes of symmetry but an oval can have even one

 once the size of an ellipse has been fixed then its exact
    shape is mathematically determined. In other words, the line
    forming the perimeter can be drawn in only ONE way. This is
    distinct from an oval where the perimeter has only to be a
    concave curve, and there are many possibilities

Hope it calrifies your doubt

Regards

Team Topper