🌐EnglishEnglishDeutschEspañolFrançaisPolskiTiếng ViệtTürkçeРусский日本語EntityQ4925292· pop 8· linked from 8 articlesBlaschke–Lebesgue theoremPlane geometry theoremAvailable in 8 languagesFrançais日本語РусскийCatalanPolskiTiếng ViệtTürkçevia Wikidata sitelinks · CC0ConnectionsInternational Standard Book NumberEntitycircleEntityCategoriesAreaConstant widthGeometric inequalitiesTheorems in plane geometry