00583naa#a2200193#i#450# EN\INFRA-M\bibl\24587 20240507131920.2 2308-4898 20181225b2018####ek#y0engy0150####ca RUS RU Competence Approach in Teaching the Topic "Tangent Plane and Normal" Journal article Moscow INFRA-M Academic Publishing LLC. 2018 7 с. Journal article local Математика. 51 RUS Dmitrieva I. M. Ivanov Gennadiy Sergeevich naukaru.ru