В треугольнике ABC{"color":"#202335","fontFamily":"stix","language":"ru"} угол В{"color":"#202335","fontFamily":"stix","language":"ru"} равен 36°{"color":"#202335","fontFamily":"stix","language":"ru"}, AB=BC{"color":"#202335","fontFamily":"stix","language":"ru"}, AD{"color":"#202335","fontFamily":"stix","language":"ru"} — биссектриса. Докажите, что треугольник ABD{"color":"#202335","fontFamily":"stix","language":"ru"} — равнобедренный.
