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Maimai
2 năm trước
Cho tam giác ABC có ABC = 60 độ , ACB = 30 độ. Trên tia đối của tia BC lấy điểm D sao cho BD = BA. Trên tia đối của tia CB lấy điểm E sao cho AC = CE. a) Tính góc BAC b) Tính số đo góc DAB , EAC , DAE
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