Если прямые перпендикулярны, то чему равен угол между ними?
1) 270°{"color":"#202335","fontFamily":"stix","language":"ru"}2) 90°{"color":"#202335","fontFamily":"stix","language":"ru"}3) 0°{"color":"#202335","fontFamily":"stix","language":"ru"}4) 180°{"color":"#202335","fontFamily":"stix","language":"ru"}
