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doitoangt2015
2 năm trước
Bài 2: Cho hình vẽ bên. Biết rằng GF = 4cm, FH = 3cm, I là trung điểm GF, IK//FH. a) Tính GK. b) Cmr:  KGF cân c) Cmr:  KFH cân (bằng 2 cách) d) Hạ KM vuông góc với FH. Cmr: M là trung điểm FH(bằng 3 cách) e) Tính độ dài IM.
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