🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPortuguêsSvenskaРусскийالعربية한국어中文日本語EntityQ1475760· pop 23· linked from 285 articlesprojective planegeometric concept of a 2D space with a "point at infinity" adjoinedAvailable in 22 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةAzerbaijaniCzechConnectionshomographyEntityfieldEntityCategoriesAlgebraic geometryComputer-assisted proofsEuclidean plane geometryHypergraphsIncidence geometryProjective geometry