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Tiencong
2 năm trước
Cho tam giác ABC (AB>AC), có AM là tia phân giác của góc A (M € BC) trên AC lấy D sao cho AD=AB a,c/m BM=MD b.gọi K là giao điểm của AB và DM, chứng minh: tam giác DAK=tam giác BAC c,CM: tam giác AKC cân d,so sánh BM và CM Chỉ cần làm phần d thôi nha
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