🌐EnglishEnglishEspañolРусский한국어EntityQ55634934· pop 5· linked from 6 articlesTennis ball theoremsmooth curve that divides a sphere into 2 equal-area subsets has at least 4 inflectionsAvailable in 5 languagesEspañolРусскийUkrainian한국어via Wikidata sitelinks · CC0ConnectionscurveEntitygeometryEntityCategoriesSpherical curvesSpherical geometryTheorems about curvesTheorems in differential geometry