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vnxa01
2 năm trước
Cho tam giác ABC gọi M là trung điểm của AB. Trên tia đối của tia MC lấy điểm N sao cho: MC = MN. Chứng minh rằng:vở viết a)ΔAMN = ΔBMC. b) AN // BC c) ΔNAC =ΔCBN
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