EntityQ649616· pop 19· linked from 164 articlesisosceles triangle theoremSign in to savetheoremConnectionsElementsEntityDiophantus of AlexandriaEntitycongruenceEntityThomas Little HeathEntityGermanEntityDutchEntitySwedishEntityArchimedesEntitynumberEntityFinnishEntityCzechEntitygeometryEntityPythagorasEntityArtificial intelligenceConceptbridgeEntityEuclidEntityCarl Friedrich GaussEntityarithmeticEntitydonkeyEntitytriangleEntityCategoriesElementary geometryEuclidean geometryHistory of mathematicsLatin words and phrasesTheorems about special trianglesWikisource templates with missing id