Trên cùng một nữa mp có bờ chứa tia OA, vẽ 2 tia OB và OC sao cho AOB =70°, AOC=110° a) Trong ba tia OA, OB, OC tia nào nằm giữa 2 tia còn lại? b) Tính số đo góc BOC c) Vẽ tia phân giác OM của góc AOB. Tính __MOC__ AOB Các bn giúp mh với khỏi vẽ hình cũng đc nha!!

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