Definition:Euclid's Definitions - Book III/1 - Equal Circles
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Definition
In the words of Euclid:
- Equal circles are those the diameters of which are equal, or the radii of which are equal.
(The Elements: Book $\text{III}$: Definition $1$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 2 (2nd ed.) ... (previous) ... (next): Book $\text{III}$. Definitions
- 2018: John M. Lee: Introduction to Riemannian Manifolds (2nd ed.) ... (previous) ... (next): $\S 1$: What Is Curvature? The Euclidean Plane