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lephuocthienbk
2 năm trước
Bài 3: (1,5 điểm) Trên cùng một nửa mặt phẳng bờ chứa tia Ox vẽ góc xOt = 400 và góc xOy = 800. a. Tia nào nằm giữa hai tia còn lại ? Vì sao ? b. Tính góc yOt ? Tia Ot có là tia phân giác của góc xOy không ? Vì sao ?
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