Home›Differential geometry›first fundamental form🌐EnglishEnglishDeutschFrançaisItalianoTürkçeРусскийفارسی한국어中文日本語EntityQ939725· pop 13· linked from 54 articlesfirst fundamental formAvailable in 13 languagesFrançaisDeutsch中文日本語РусскийCatalanGreekHebrewHungarianUkrainianConnectionsdifferential geometry of surfacesEntityCarl Friedrich GaussEntityCategoriesDifferential geometryDifferential geometry of surfacesSurfaces