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truongbachhanhnhu
2 năm trước
giúp mk bài hình này vs!>.< Cho góc xOy=120 độ, vẽ tia Ot là tia phân giác của góc xOy a) Tính góc xOt b) Vẽ Oz là tia đối của tia Ox. Tính zOy, zOt c) Chứng tỏ tia Oy là tia phân giác của góc xOy d) Vẽ tia OM là tia phân giác của góc zOy. Tính xOM, tOM
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