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thuy22052001
2 năm trước
Trên đường thẳng xy lấy ba điểm phân biệt A, B, C sao cho AB= 4cm, AC= 4cm a) Tính độ dài đoạn thẳng BC b) Gọi I là trung điểm của AB. Tính CI. c) Trên xy lấy điểm K sao cho KA = 6cm. Tính KI Vẽ hình giúp mình
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