Definition:Chord of Contact/Ellipse

Definition
Let $\EE$ be an ellipse embedded in the plane.

Let $P$ be a point also embedded in the plane which is outside the boundary of $\EE$.

Let $\TT_1$ and $\TT_2$ be a tangents to $\CC$ passing through $P$.

Let:
 * $\TT_1$ touch $\EE$ at $U$
 * $\TT_2$ touch $\EE$ at $V$.

$UV$ is known as the chord of contact on $\EE$ with respect to $P$.