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thanghgdkm
2 năm trước
Cho tia Ox. Trên tia Ox lấy hai điểm M,N sao cho OM= 10CM, ON=5CM A ) Trong ba điểmO,M,N điểm nào nằm giữa hai điểm còn lại? Vì sao B ) so sánh ON, NM C )Điển N có là trung điểm của đoạn thẳng OM không. Vì sao. D )H là trung điểm của đoạn thẳng MN. Tính HM
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