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Source — Euclid's Elements, encoded as an rrxiv paper — rrxiv

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Source — Euclid's Elements, encoded as an rrxiv paper

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X.66 Proposition X.66

A straight line commensurable in length with a binomial straight line is itself also binomial and the same in order.

Proof

Multiplication by a rational ratio preserves the binomial type and order.

lines 74–74 in main.tex