Definition:Inverse Ratio

From ProofWiki
Jump to navigation Jump to search

Definition

Let $R = a : b$ be a ratio.

Then the inverse ratio to $R$ is $b : a$.


In the words of Euclid:

Inverse ratio means taking the consequent as antecedent in relation to the antecedent as consequent.

(The Elements: Book $\text{V}$: Definition $13$)


Sources