Euclid:Proposition/III/3

Proposition

In the words of Euclid:

If in a circle a straight line through the centre bisect a straight line not through the centre, then it cuts it at right angles; and if it cuts it at right angles, it also bisects it.

(The Elements: Book $\text{III}$: Proposition $3$)

Sources

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