An ellipse usually looks like a squashed circle (in fact a circle is a special kind of ellipse).

Any point P on an ellipse has the

It is one of the Conic Sections.

Play with it here:

Any point P on an ellipse has the

**same sum of distances**to two "focus" points (marked F and G here).It is one of the Conic Sections.

Play with it here:

See: Conic Section

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