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chessterking123
2 năm trước
Gấp gấp gấp?!!!? Cho tam giác đều ABC .D là điểm thuộc cạnh AC, đường thẳng vẽ từ D vuông góc AB cắt đường thẳng vẽ từ C vuông góc BC tại E .Gọi M là trung điểm của AD ,Tính góc m b e
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