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truonghuy4101
2 năm trước
Cho tam giác ABC gọi M, N là các điểm thuộc cạnh AC, BC sao cho MA = MC, NC = 2NB. Đường thẳng qua M song song với AN cắt BC tại P. a) Chứng minh BN = NP = P C. b) Chứng minh AN đi qua của trung điểm của BM.
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