Definition:Euclid's Definitions - Book XI/21 - Cylinder
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Definition
In the words of Euclid:
- When, one side of those about the right angle in a rectangular parallelogram remaining fixed, the parallelogram is carried round and restored again to the same position from which it began to be moved, the figure so comprehended is a cylinder.
(The Elements: Book $\text{XI}$: Definition $21$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 3 (2nd ed.) ... (previous) ... (next): Book $\text{XI}$. Definitions