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0baogiohet39
2 năm trước
Vẽ đoạn thẳng MN dài 8cm.Gọi R là trung điểm của MN a.Tính MR,RN b.Lấy hai điểm P và Q trên đoạn thẳng MN sao cho MP=NQ=3cm.Tính PR,QR c.Điểm R có là trung điểm của đoạn thẳng PQ ko?Vì sao? Jup mk vsssss lm đầy đủ chi tiết,nhớ vẽ hình chi tiết ạ Mk đg cần gấp
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