🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةفارسی한국어中文日本語EntityQ528525· pop 23· linked from 180 articleshomogeneous coordinatesAlso known as projective coordinatesmathematicsAvailable in 23 languagesEspañolFrançaisDeutsch中文РусскийPortuguêsItalianoالعربيةBosnianCatalanConnectionsRiemann sphereEntitypoint at infinityEntityCategories1827 in scienceLinear algebraProjective geometry