Definition:Circle/Center
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This page is about Center in the context of Circle. For other uses, see Center.
Definition
In the words of Euclid:
- And the point is called the center of the circle.
(The Elements: Book $\text{I}$: Definition $16$)
In the above diagram, the center is the point $A$.
Linguistic Note
The British English spelling of center is centre.
The convention on $\mathsf{Pr} \infty \mathsf{fWiki}$ is to use the American English spelling center, but it is appreciated that there may be lapses.