Home›Geometry›All GeometryBrowse ByAll GeometryFactsAll GeometrySourcesComments (0)Reader Challenges (0)FactsComparisonEra Of EmergenceWell-attested300 BCE 1All GeometryFilter Results106 entriesBranchAllAlgebra (1)Algebraic Geometry (1)Discrete Geometry (2)Geometry (29)Topic AreaAllAlgebraic Geometry (6)Classical Euclidean Geometry (27)Convex and Discrete Geometry (16)Differential Geometry (7)Polyhedra and Polytopes (5)Projective Geometry (5)Triangle and Circle Geometry (40)ProvedAll520 BCE (1)300 BCE (1)200 BCE (1)60 (1)150 (1)340 (1)1640 (1)1643 (1)1648 (1)1672 (1)1678 (1)1725 (1)1731 (1)1746 (1)1758 (1)1779 (1)1796 (1)1797 (1)1804 (1)1807 (1)1813 (1)1822 (2)1827 (1)1833 (1)1837 (1)1842 (1)1848 (1)1857 (1)1860 (1)1876 (1)1878 (1)1881 (1)1882 (1)1891 (1)1898 (1)1899 (2)1911 (2)1913 (1)1921 (1)1931 (1)1937 (1)1941 (1)1942 (1)1944 (1)1945 (1)1949 (1)1951 (1)1953 (1)1956 (1)1975 (1)1997 (1)1998 (1)2002 (1)Proved ByAllArthur Cayley (1)Augustin-Louis Cauchy (1)Bernhard Riemann (1)Carl Friedrich Gauss (3)John Nash (1)Leonhard Euler (1)Paul Erdos (2)Pythagoras (1)Rene Descartes (1)Thomas Hales (1)Named AfterAllAugustin-Louis Cauchy (1)Carl Friedrich Gauss (1)Isaac Newton (1)Leonhard Euler (3)Statement FormAllCharacterization Theorem (29)Existence Theorem (21)Identity or Equation (38)Impossibility Theorem (2)Inequality (13)Uniqueness Theorem (2)BrowseCompareSelect all 100Alexandrov's Theorem on PolyhedraGeometryAngle Bisector TheoremGeometryAngle TrisectionGeometryAnne's TheoremGeometryApollonius's TheoremGeometryArt Gallery ProblemGeometryBarbier's TheoremGeometryBeckman-Quarles TheoremGeometryBeck's Theorem (Geometry)GeometryBezout's TheoremGeometryBlaschke-Santalo InequalityGeometryBonnet-Myers TheoremGeometryBrahmagupta TheoremGeometryBretschneider's FormulaGeometryBrianchon's TheoremGeometryBritish Flag TheoremGeometryButterfly TheoremGeometryCaratheodory's Theorem (Convex Geometry)GeometryCaratheodory's Theorem (Convex Hull)GeometryCarnot's TheoremGeometryCartan-Hadamard TheoremGeometryCasey's TheoremGeometryCauchy's Rigidity Theorem (Convex Polyhedra)GeometryCayley-Bacharach TheoremGeometryCeva's TheoremGeometryChow's TheoremGeometryClifford's Circle TheoremsGeometryCommandino's TheoremGeometryConstructibility of the Regular HeptadecagonGeometryConway Circle TheoremGeometryCrossbar TheoremGeometryCrystallographic Restriction TheoremGeometryDe Gua's TheoremGeometryDesargues' TheoremGeometryDescartes Circle TheoremGeometryDouble Bubble TheoremGeometryEqual Incircles TheoremGeometryErdos-Anning TheoremGeometryErdos-Mordell InequalityGeometryEuler's Polyhedron FormulaGeometryEuler's Quadrilateral TheoremGeometryEuler's Rotation TheoremGeometryExterior Angle TheoremGeometryFeuerbach's TheoremGeometryFinsler-Hadwiger TheoremGeometryFive Circles TheoremGeometryGarfield's Proof of the Pythagorean TheoremGeometryGauss-Bonnet TheoremGeometryGauss's Theorema EgregiumGeometryGeometric Mean TheoremGeometryHelly's TheoremGeometryHeron's FormulaGeometryHinge TheoremGeometryHjelmslev's TheoremGeometryHodge Index TheoremGeometryHopf-Rinow TheoremGeometryInscribed Angle TheoremGeometryIntercept TheoremGeometryIntersecting Chords TheoremGeometryIntersecting Secants TheoremGeometryIsoperimetric InequalityGeometryJapanese Theorem for Cyclic PolygonsGeometryJapanese Theorem for Cyclic QuadrilateralsGeometryKawasaki's TheoremGeometryKepler ConjectureGeometryLester's TheoremGeometryMenelaus's TheoremGeometryMiquel's TheoremGeometryMohr-Mascheroni TheoremGeometryMonge's TheoremGeometryMorley's Trisector TheoremGeometryNapoleon's TheoremGeometryNash Embedding TheoremGeometryNewton's Theorem (Quadrilateral)GeometryNine-Point Circle TheoremGeometryPappus's TheoremGeometryPascal's TheoremGeometryPasch's TheoremGeometryPetersen-Morley TheoremGeometryPick's TheoremGeometryPitot TheoremGeometryPompeiu's TheoremGeometryPoncelet's Closure TheoremGeometryPoncelet-Steiner TheoremGeometryPtolemy's TheoremGeometryPythagorean TheoremGeometryRadon's TheoremGeometryRauch Comparison TheoremGeometryRiemann-Hurwitz FormulaGeometryRiemann-Roch TheoremGeometryRouth's TheoremGeometrySaccheri-Legendre TheoremGeometrySimson Line TheoremGeometrySix Circles TheoremGeometrySpiral of TheodorusGeometrySteiner-Lehmus TheoremGeometryStewart's TheoremGeometrySylvester-Gallai TheoremGeometryTangent-Secant TheoremGeometryThales' TheoremGeometry12Next →Sources1. Wikipedia: Geometrytier 2Wikimedia FoundationHistory sectionQuote, History sectionAround 300 BC, geometry was revolutionized by Euclid, whose Elements, widely considered the most successful and influential textbook of all time, introduced mathematical rigor through the axiomatic method.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.