🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsРусскийالعربية中文日本語EntityQ644719· pop 20· linked from 85 articleshalf-spaceportion of a Euclidean space bisected by a hyperplaneAvailable in 19 languagesEspañolFrançaisDeutsch中文РусскийItalianoBasqueCatalanCzechFinnishGreekConnectionslineEntitygeometryEntityCategoriesEuclidean geometry