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duyenkim951230
2 năm trước
trên cùng một nửa mặt phẳng bờ chứa tia Ox, vẽ 2 tia Oy và Oz sao cho xOy = 60 độ và xOz = 120 độ a,tia nào nằm giữa trong 3 tia Ox, Oy, Oz? Vì sao? b, tia Oy có là tia phân giác của xOz ko? vì sao? c, Vẽ Om là tia đối của tia Oz. Tính góc kề bù vs góc yOz, xOz yêu cầu vẽ hình đầy đủ nha
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