Definition:Euclid's Definitions - Book VII/21 - Similar Numbers
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Definition
In the words of Euclid:
- Similar plane and solid numbers are those which have their sides proportional.
(The Elements: Book $\text{VII}$: Definition $21$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 2 (2nd ed.) ... (previous) ... (next): Book $\text{VII}$. Definitions