В треугольнике ABC известно, что АВ < ВС < АС. Найдите A, B и C если из углов равен 100 а другой — 50

John and Sally visited Russian museum in St Petersburg last summer
John and Sally enjoyed the Summer Garden in St Petersburg last summer
John and Sally had a boat trip in St Petersburg last summer
John and Sally went to the circus in St. Petersburg last summer
John and Sally met Russian people in St. Petersburg last summer
John and Sally send a postcard to their parents in St Petersburg last summer
John and Sally wrote an email to their friends in at Petersburg last summer