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Ngolinh123321
2 năm trước
Bài 4: (1 điểm) Cho góc xOy = 130°. Oz là tia phân giác của góc ấy. Vẽ góc xOz đối đỉnh với góc xOz. Tính số đo yOz'. giúp mình vs ạ ;-; ;-; ;-; ;-;
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