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Taytuan2802
2 năm trước
cho tam giác vuông cân tại A,A=45 độ.Từ trung điểm I của cạnh AC kẻ đường thẳng vuông góc với AC cắt đường thẳng BC ở M.Trên tia đối của tia AM lấy điểm N sao cho AN =BM.CM: a)góc AMC=góc BAC b,tam giác ABM=tam giác CAN c,tam giác MNC cân tại C
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