Euclid:Proposition/I/11
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Proposition
In the words of Euclid:
- To draw a straight line at right angles to a given straight line from a given point on it.
(The Elements: Book $\text{I}$: Proposition $11$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 1 (2nd ed.) ... (previous) ... (next): Book $\text{I}$. Propositions