На сторонах угла BAC{"color":"#202335","fontFamily":"stix","language":"ru"}, равного 20°{"color":"#202335","fontFamily":"stix","language":"ru"}, и на его биссектрисе отложены равные отрезки AB, AC{"color":"#202335","fontFamily":"stix","language":"ru"} и AD{"color":"#202335","fontFamily":"stix","language":"ru"}. Определите величину угла BDC{"color":"#202335","fontFamily":"stix","language":"ru"}.
