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2 năm trước
cho tam giác ABC điểm M thuộc cạnh BC sao cho BM/MC = 2/3. Kẻ MH // AC (H thuộc AB), kẻ MK // AC. a) tính MB và MC b) Tính chu vi tam giác ABC biết chu vi tam giác KMC=25cm c)CM: HB.MC=BM.KM ai đó lm ơn giúp tớ vs ạ!! lát phải nộp bài rồi mà mới lm xog 1 bài hic hic
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