Definition:Diameter of Central Conic/Also defined as
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Definition
Some sources define the diameter of a central conic $\KK$ as a chord of $\KK$ which passes through the center of $\KK$.
This is a perfectly adequate definition of a diameter of an ellipse.
Indeed, in the context of a circle, this is how a diameter is routinely defined.
However, it falls short of providing a full definition of the diameter of a hyperbola.
Hence, for the general central conic, and one that is not specifically a circle, this definition is not used on $\mathsf{Pr} \infty \mathsf{fWiki}$.
Also see
- Results about diameters of conic sections can be found here.
Sources
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): diameter