Euclid:Proposition/I/48
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Proposition
In the words of Euclid:
- If in a triangle the square on one of the sides be equal to the squares on the other two sides of the triangle, the angle contained by the remaining two sides of the triangle is right.
(The Elements: Book $\text{I}$: Proposition $48$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 1 (2nd ed.) ... (previous) ... (next): Book $\text{I}$. Propositions