Category:Definitions/Power of Point

This category contains definitions related to Power of Point.
Related results can be found in Category:Power of Point.

Let $C$ be a circle in the the plane whose center is $O$ and whose radius is $r$.

Let $P$ be a point whose distance from $O$ is $d$.

The power of $P$ with respect to $C$ is defined to be:

$d^2 - r^2$