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nam10a3cp
2 năm trước
Bài 3: Cho hinh thang ABCD với AB // CD, AB< CD. AC cắt BD tại O, BC cắt AD tại I. Gọi M, K lần lượt là trung điểm CD và AB. Chứng minh: a) Đường thắng MO đi qua K b) Ba điểm M; I; K thắng hàng Bài 3 giíp mình mình cảm ơn ạ
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