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八年级：四边形APQD沿PQ折叠，当CA´值最小时，求CQ的值是多少？
八年级：四边形APQD沿PQ折叠，当CA´值最小时，求CQ的值是多少？
八年级数学：平行四边形，矩形，菱形，正方形，三角形中位线培优51/254
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