Mathematics, 25.07.2021 19:30 aefrain42
Cho đoạn thẳng AB=7cm. Trên tia AB lấy điểm C sao cho AC= 4cm a)Tính độ dài đoạn thẳng BC b)Trên tia đối của tia BC lấy điểm D sao cho BD=3cm. Tính độ dài đoạn thẳng CD c)Điểm B có là trung điểm của đoạn thẳng CD không?
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Cho đoạn thẳng AB=7cm. Trên tia AB lấy điểm C sao cho AC= 4cm a)Tính độ dài đoạn thẳng BC b)Trên tia...
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