Hình thang ABCD có hai đường chéo cắt nhau tại O. Hãy tìm tất cả các cặp hình tam giác trong hình thang ABCD có diện tích bằng nhau.
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:![](data:image/png;base64,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)
Các cặp tam giác bằng nhau:
+ 2 màu xanh : AOD và BOC
+ ABD và ABC
+ ABD và BDC
BẠN PHẢI GIẢI CẢ BÀI GIẢI RA CHỨ !