Euclid:Proposition/VIII/20

Proposition

In the words of Euclid:

If one mean proportional number fall between two numbers, the numbers will be similar plane numbers.

(The Elements: Book $\text{VIII}$: Proposition $20$)

Sources

• 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 2 (2nd ed.) ... (previous) ... (next): Book $\text{VIII}$. Propositions