🌐EnglishEnglishDeutschEspañolFrançaisNederlandsPortuguêsTürkçeРусскийالعربية한국어日本語EntityQ1568612· pop 9· linked from 13 articlesMarden's theoremGeometric relationship between the zeros of a cubic polynomial and of its derivativeConnectionsmathematicsEntitytriangleEntityCategoriesConic sectionsTheorems about polynomialsTheorems about trianglesTheorems in complex geometry