Definition:Latus Rectum/Circle
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Definition
The circle, being a degenerate ellipse whose foci coincide, properly has no latus rectum, as a circle has neither a directrix nor a major axis.
However, there is a case to make that, in a sense, a diameter of a circle $C$ can be considered as a latus rectum of $C$.
Also see
- Results about the latus rectum of a circle can be found here.
Linguistic Note
The term latus rectum is a compound of the Latin:
- latus, meaning side
- rectum, meaning straight or right, as in straight line or right angle.
Hence it literally means right side or straight side.
Its plural is latera recta.
Sources
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