Четырёхугольник ABCD{"color":"#202335","fontFamily":"stix","language":"ru"} описан около окружности, AD=5,{"color":"#202335","fontFamily":"stix","language":"ru"} BC=121,{"color":"#202335","fontFamily":"stix","language":"ru"} CD=10.{"color":"#202335","fontFamily":"stix","language":"ru"} Найдите AB.{"color":"#202335","fontFamily":"stix","language":"ru"}
