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ai làm đc mn vote 5 sao ai vẽ hình mn vote hay nhất 9.cho tia ox trên dòng kẻ trang giấy .vẽ tia ox sao cho góc x Oy =60 độ. tia Oz là tia phân giác của góc xOy a)tính góc yOz và góc xOz b)gọi A thuộc tia Oy và trên dòng kẻ ,cách tia Ox 5 dòng .kẻ tia Am trên dòng kẻ cắt tia Oz tại B +)đo OA,AB và so sánh +)đo góc AOB, góc ABO và so sánh +)so sánh góc ABO và góc xOz +)so sánh góc xOz và góc mBz
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