習題庫 已知*線OA,由O點再引*線OB、OC,使∠AOB=600,∠BOC=300,則∠AOC的度數是 來源:國語幫 2.35W 問題詳情:已知*線OA,由O點再引*線OB、OC,使∠AOB=600,∠BOC=300, 則∠AOC的度數是______.【回答】900或300知識點:角題型:填空題 OA AOB600 OB OC BOC300