Back سطح مخروطي Arabic Superfície cònica Catalan سطح مخروطی Persian Permukaan kerucut ID Superficie conica Italian Kjegleflate NN Powierzchnia stożkowa Polish Suprafață conică Romanian Коническая поверхность Russian Конічна поверхня Ukrainian
In geometry, a conical surface is an unbounded surface in three-dimensional space formed from the union of infinite lines that pass through a fixed point and a space curve.