Euclid:Proposition/I/16
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Proposition
In the words of Euclid:
- In any triangle, if one of the sides be produced, the The exterior angle is greater than either interior and opposite angles.
(The Elements: Book $\text{I}$: Proposition $16$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 1 (2nd ed.) ... (previous) ... (next): Book $\text{I}$. Propositions