Definition:Director Circle
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Definition
Let $\KK$ be a central conic.
The director circle of $\KK$ is the locus of the point of intersection of pairs of perpendicular tangents to $\KK$.
Also see
- Results about director circles can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): director circle
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): director circle