Category:Foci of Conic Sections

This category contains results about Foci of Conic Sections.
Definitions specific to this category can be found in Definitions/Foci of Conic Sections.

Let $\KK$ be a conic section specified in terms of:

a given straight line $D$

a given point $F$

a given constant $\epsilon$

where $K$ is the locus of points $P$ such that the distance $p$ from $P$ to $D$ and the distance $q$ from $P$ to $F$ are related by the condition:

$q = \epsilon \, p$

The point $F$ is known as the focus of $\KK$.