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vinhthinh12hihi
2 năm trước
Cho tam giác ABC vuông tại A , AB=3cm , AC=4cm , và tam giác MNP vuông tại M , MN=15cm , NP=25cm (vẽ hình) a)Tính độ dài các đoạn thẳng BC , MP b)Tam giác ABC có đồng dạng với tam giác MNP không ? Tại sao ? c)Tính tỉ số diện tích hai tam giác ABC và MNP , so sánh tỉ số này với tỉ số đồng dạng của hai tam giác
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