如图,在矩形ABCD中,对角线AC,BD相交于点O,∠DAC=60°,点F在线段AO上,连接DF,以DF为边作等边三角形DFE,点E和点A分别位于DF两侧,下列结论:①DO=DA; ②DF=EC;③∠ADF=∠ECF;④点F由A到O的运动过程中,点E的运动路径长为线段BC的长度.则正确结论的序号为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/b56789b2-dd15-4c9a-a212-6d6f6f901eb0.png?resizew=224)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/b56789b2-dd15-4c9a-a212-6d6f6f901eb0.png?resizew=224)
A.①④ | B.①②③④ | C.②③④ | D.①②③ |
21-22八年级下·河北石家庄·期末 查看更多[2]
河北省石家庄市石门实验学校2021-2022学年八年级下学期期末数学试卷(已下线)专题9.2 (特殊)的平行四边形中的翻折、旋转与动态问题 专题讲练-2022-2023学年八年级数学下册重难题型全归纳及技巧提升专项精练(苏科版)
更新时间:2022-09-08 16:11:33
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