На стороне BC{"color":"#202335","fontFamily":"stix","language":"ru"} прямоугольника ABCD,{"color":"#202335","fontFamily":"stix","language":"ru"} у которого AB=1,2{"color":"#202335","fontFamily":"stix","language":"ru"} и AD=1,7,{"color":"#202335","fontFamily":"stix","language":"ru"} отмечена точка E{"color":"#202335","fontFamily":"stix","language":"ru"} так, что треугольник ABE{"color":"#202335","fontFamily":"stix","language":"ru"} является равнобедренным. Найдите ED.{"color":"#202335","fontFamily":"stix","language":"ru"}
