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CAÙC BAØI TAÄP CHÖÙNG MINH TAM GIAÙC ÑOÀNG DAÏNG Baøi 1: Cho tam giaùc ABC vuoâng taïi A , ñöôøng cao AH. c/ Tính dieän tích tam giaùc AHM. Ñöôøng phaân giaùc goùc A caét caïnh BC ta[r]
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