Euclid's Elements, Book X, Proposition 11 (X.11)

Euclid's Elements, Book X, Proposition 11 (X.11)

Sep 16, 2024

"If four magnitudes be proportional, and the first be commensurable with the second, the third will also be commensurable with the fourth; and, if the first be incommensurable with the second, the third will also be incommensurable with the fourth."