Definition:Euclid's Definitions - Book XI/17 - Diameter of Sphere
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Definition
In the words of Euclid:
- A diameter of the sphere is any straight line drawn through the centre and terminated in both directions by the surface of the sphere.
(The Elements: Book $\text{XI}$: Definition $17$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 3 (2nd ed.) ... (previous) ... (next): Book $\text{XI}$. Definitions