Диагонали AC{"color":"#202335","fontFamily":"stix","language":"ru"} и BD{"color":"#202335","fontFamily":"stix","language":"ru"} параллелограмма ABCD{"color":"#202335","fontFamily":"stix","language":"ru"} пересекаются в точке O,{"color":"#202335","fontFamily":"stix","language":"ru"} AC=12,{"color":"#202335","fontFamily":"stix","language":"ru"} BD=20,{"color":"#202335","fontFamily":"stix","language":"ru"} AB=7.{"color":"#202335","fontFamily":"stix","language":"ru"} Найдите DO.{"color":"#202335","fontFamily":"stix","language":"ru"}
