🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ841893· pop 28· linked from 53 articlesDesargues' theoremtheorem that two triangles are in perspective axially if and only if they are in perspective centrallyAvailable in 27 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةFinnishGalicianConnectionsprojective planeEntitytriangleEntityCategoriesEuclidean plane geometryProof without wordsTheorems about trianglesTheorems in projective geometry