Euclid:Proposition/III/27

Proposition

In the words of Euclid:

In equal circles angles standing on equal circumferences are equal to one another, whether they stand at the centres or at the circumferences.

(The Elements: Book $\text{III}$: Proposition $27$)

Sources

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