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quachchihungily
2 năm trước
Cho tam giác ABC. Tia phân giác của B cắt AC tại M. Tia phân giác của góc C cắt AB tại N. Giả sử BN + CM = BC. Hãy tính số đo góc A Ai làm đc chắc chắn mik vote 5* và cảm ơn nhé!!!!!!!!!!
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