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Nahouyen
2 năm trước
Cho tam giác vuông ABC vuông tại A có AB = 6cm, AC = 8cm và BC = 10 cm ( hs phải vẽ hình vào bài) a./ Tính diện tích tam giác ABC? b./Lấy điểm M trên cạnh AB sao cho AM = 2cm, lấy điểm N trên cạnh BC sao cho AMNC là hình thang vuông. Tính diện tích tam giác BMN
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