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thanhhoang914
2 năm trước
Bài 4: Cho góc nhọn xOy, phân giác Ot. lấy M trong góc xOy. Từ M hạ MA vuông góc với Ox, MB vuông góc với Oy. Góc C là giao điểm của MA và Ot. Từ C hạ CD vuông góc với Oy. a, So Sánh MB và MD b,Chứng minh MB < MA
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