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binhmicconb
2 năm trước
trên cùng một nửa mặt phẳng bờ chứa tia ox, vẽ hai tia ot và oy sao cho xOt = 35 độ và xOy=80 độ. a) Tính số đo yOt ? b ) Vẽ tai Om là tia đối của tia Ot . Kể tên các cặp góc kề bù có trên hình vẽ .
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