Revision #876 → #1455 · back to history
addedParallel postulate (original formulation)e6d05db9954c
addedParallel postulate (biconditional formulation)72610b03ff3c
addedConverse of the parallel postulate5ca6595fc26a
addedEuclidean geometry1858c33ea5d2
addedNon-Euclidean geometrydc619881c0d4
addedHyperbolic geometryad5a06182e23
addedElliptic geometrye1ac2c432089
addedSpherical geometry: two lines meet in two points960094e5ec39
addedAbsolute geometrya07773448884
addedPlayfair's axioma88e7c0ae8a5
addedEquivalence of Playfair's axiom with parallel postulate687d41b81b5d
addedStatements equivalent to the parallel postulatedddff85bd38e
addedEuclid Book I, Proposition 2741f3d98bee76
addedDecomposition into Lotschnittaxiom and Aristotle's axiomdc3398e8d2ad
addedLotschnittaxiom46a03ffa84aa
addedAristotle's axioma8bf3d2d8eef
addedIncidence form of Lotschnittaxiom20093465f266
addedIncidence form of Aristotle's axiom3d9c9d71b2f4