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anhnguyen0869605021
2 năm trước
cho góc MON và góc NOP là hai góc kề bù. OE là tia phân giác của góc MON. Kẻ tia OF vuông góc với OE ( OF nằm trong góc NOP. Chứng tỏ tia OF là tia phân giác của góc NOP. ×××× giải thích đầy đủ ạ, em cảm ơn nhìu nhìu××××
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