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mkien7814
2 năm trước
Bài 1: Cho đoạn thẳng AB = 6cm. Gọi C là một điểm nằm giữa A và B . Gọi M là trung điểm của CA , N là trung điểm của CB. Tính MN. Bài 2: Cho đoạn thẳng AB = 12 cm. Lấy điểm N nằm giữa hai điểm A, B sao cho AN = 2cm. Gọi M là trung điểm của BN, P là trung điểm của MN. Tính độ dài đoạn thẳng BP.
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