Axioma de Playfair (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Axioma de Playfair" in Spanish language version.

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6^th place

5^th place

6,602^nd place

8,696^th place

archive.org

Playfair, 1846, p. 29 Playfair, John (1846). Elements of Geometry. W. E. Dean.
Heath, 1956, Vol. 1, p. 190 Heath, Thomas L. (1956). The Thirteen Books of Euclid's Elements ([Facsimile. Original publication: Cambridge University Press, 1908] 2nd edición). New York: Dover Publications.
Heath, 1956, Vol. 1, p. 220 Heath, Thomas L. (1956). The Thirteen Books of Euclid's Elements ([Facsimile. Original publication: Cambridge University Press, 1908] 2nd edición). New York: Dover Publications.
Playfair, 1846, p. 11 Playfair, John (1846). Elements of Geometry. W. E. Dean.
Playfair, 1846, p. 291 Playfair, John (1846). Elements of Geometry. W. E. Dean.
George Phillips (1826) Elements of Geometry (containing the first six books of Euclides), p. 3, Baldwin, Cradock, and Joy
La demostración se puede encontrar en Heath, 1956, Vol. 1, p. 313 Heath, Thomas L. (1956). The Thirteen Books of Euclid's Elements ([Facsimile. Original publication: Cambridge University Press, 1908] 2nd edición). New York: Dover Publications.
Heath, 1956, Vol. 1, p. 314 Heath, Thomas L. (1956). The Thirteen Books of Euclid's Elements ([Facsimile. Original publication: Cambridge University Press, 1908] 2nd edición). New York: Dover Publications.

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Euclid's elements, Book I, definition 23