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han123hoian
2 năm trước
Cho tam giác ABC có AB = 6cm; AC = 9cm, kẻ phân giác AE. Từ B và C hạ các đường vuông góc BM, CN tương ứng xuống tia AE. a)Chứng minh tam giác ABM đồng dạng với tam giác CAN b)tính tỉ số BMCN. c)Chứng minh AM . EN = AN.EM Ai giúp mik nót vs, mai mik phải nộp ko bt lm cíu nốt giùm
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