vẽ góc bẹt XOy , vẽ tia Ot sao cho YOt = 60 độ 1 . tính số đo XOt 2 . vẽ phân giác Om của Yot và phân giác ON của TOx . hỏi MOT và TOn cs kề nhau không ? cs phụ nhau không ? giải thích Chỉ cần vẽ hình thôi ko cần giải đâu

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