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References
- ↑ Knorr, Wilbur (1983), ""La croix des mathématiciens": the Euclidean theory of irrational lines", Bulletin of the American Mathematical Society , New Series, 9 (1): 41–69, doi: 10.1090/S0273-0979-1983-15155-8 , MR 0699316 .
- ↑ Euclid Proposition XIII.6.
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