Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
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a, Các tia trùng với tia OB là: AB; AC; OC.
b, Ox và By không phải là 2 tia đối nhau vì 2 tia này không có chung gốc.
c, Các đoạn thẳng trên đường thẳng xy: AO; AB; AC; OB; OC; BC.
