Playfair's axiom

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Euclid (fl. c. 300 bc) Greek mathematician


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The axiom which says that, given a point not on a given line, there is precisely one line through the point parallel to the line. It is equivalent to the axiom of Euclid's known as the parallel postulate. The name arises from its occurrence in a book by John Playfair (1748–1819), a British geologist and mathematician.

Subjects: Mathematics.

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