Euclid:Proposition/V/9
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Proposition
In the words of Euclid:
- Magnitudes which have the same ratio to the same are equal to one another; and magnitudes to which the same has the same ratio are equal.
(The Elements: Book $\text{V}$: Proposition $9$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 2 (2nd ed.) ... (previous) ... (next): Book $\text{V}$. Propositions