Euclid's fifth axiom

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Related to Euclid's fifth axiom: Parallel postulate
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Noun1.Euclid's fifth axiom - only one line can be drawn through a point parallel to another line
Euclidean axiom, Euclid's axiom, Euclid's postulate - (mathematics) any of five axioms that are generally recognized as the basis for Euclidean geometry
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