4.已知角AOB=50度,角BOC=30度,则角AOC=__________,或__________.
问题描述:
4.已知角AOB=50度,角BOC=30度,则角AOC=__________,或__________.
答
4.已知角AOB=50度,角BOC=30度,则角AOC=___20_______,或_____80_____.
答
已知角AOB=50度,角BOC=30度,则角AOC=80度,或20度.