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thuhuongcay2
2 năm trước
giuwps mk vs ạ mk đang cần gấp ý b, c nha cảm ơn đề bài: Tam giác ABC vuông tại A, đường cao AH a, C/m AH.BC = AB.AC b,Gọi BE là tia p/g của góc ABC BE cắt AH tại D. C/m tam giác ABD đồng dạng với tam giác CBE
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