Category:Eccentric Circles of Ellipses

This category contains results about Eccentric Circles of Ellipses.
Definitions specific to this category can be found in Definitions/Eccentric Circles of Ellipses.

Let $\KK$ be an ellipse whose center is at $O$.

The eccentric circles of $\KK$ are the two circles whose center is at $O$ and whose diameter coincides with either the major axis of $\KK$ or the minor axis of $\KK$.