1. Cho 3 điểm M, N, P nằm ngoài đường thẳng d, biết cả hai đoạn thẳng MN, NP đều cắt đường thẳng d. Không thể xảy ra điều nào trong các điều sau đây: A. M và N nằm khác phía đối với đường thẳng d B. N và P nằm khác phía đối với đường thẳng d C. M và P nằm khác phía với đường thẳng d 2. Cho 2 tia Ox, Oy không đối nhau. Lấy các điểm M, N. Gọi Q là điểm thuộc tia đối của tia OP, ko trùng O khi đó: A. Tia OQ cắt đoạn thẳng MN B. Tia ON cắt đoạn thẳng MQ C. Tia QO cắt đoạn thẳng MN D. Tia OM cắt đoạn thẳng QN

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