摘要:18.····························································································································································· 下列说法中.正确的是 ( ). (A)在成中心时称的图形中.连结对称点的线段不一定都经过对称中心 (B)在成中心对称的图形中.连结对称点的线段都被对称中心平分 (C)若两个图形的对应点连成的线段都经过某一点.那么这两个图形一定关于这一点成中心对称 (D)以上说法都正确

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