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thangmanh567
2 năm trước
cho tia OX và tia OY là hai tia đối nhau. điểm M và N thuộc tia Õ sao cho M nằm giữa hai O và N. điểm P thuộc tia Oy. a, tia nào trùng với tia OP ? tia nào trùng với tia ON ? b,kể tên các tia trùng nhau gốc N c,tia nào là tia đối của tia MN d.vì sao điểm M nằm giữa 2 điểm N vá P
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