Euclid:Proposition/I/23

Proposition

In the words of Euclid:

On a given straight line and at a point on it to construct a rectilineal angle equal to a given rectilineal angle.

(The Elements: Book $\text{I}$: Proposition $23$)

Sources

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