Euclid:Proposition/XIII/9
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Proposition
In the words of Euclid:
- If the side of the hexagon and decagon inscribed in the same circle be added together, the whole straight line has been cut in extreme and mean ratio, and its greater segment is the side of the hexagon.
(The Elements: Book $\text{XIII}$: Proposition $9$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 3 (2nd ed.) ... (previous) ... (next): Book $\text{XIII}$. Propositions