Definition:Euclid's Definitions - Book II/2 - Gnomon

Definition

In the words of Euclid:

And in any parallelogrammic area let any one whatever of the parallelograms about its diameter with the two complements be called a gnomon.

(The Elements: Book $\text{II}$: Definition $2$)

Sources

• 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 1 (2nd ed.) ... (previous) ... (next): Book $\text{II}$. Definitions