Definition:Covertex
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Definition
Covertex of Ellipse
Let $K$ be an ellipse.
A covertex of $K$ is either one of the endpoints of the minor axis of $K$.
Covertex of Hyperbola
Let $K$ be a hyperbola.
Each of the endpoints of the conjugate axis of $K$ is known as a covertex of $K$.
Linguistic Note
The plural of covertex is covertices.