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tnguyen7112001
2 năm trước
Bài 62 Cho tam giác cân ABC có góc A=45°, AB=AC.Từ trung điểm I của cạnh AC kẻ đường vuông góc với AC cắt đường thẳng BC ở M. Trên tia đối của tia AM lấy điểm N sao cho AN=BM Chứng Minh: a) Góc AMC=Góc ABC b)Tam giác ABM=Tam giác CAN c)Tam giác MNC vuông cân ở C
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