如图,正方形ABCD中,点E、F分别是BC、AB边上的点,且AE⊥DF,垂足为点O,△AOD的面积为
,则图中阴影部分的面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/d2bd9bde-6bb3-4c66-887a-f91d7a610902.png?resizew=131)
19-20八年级下·江苏常州·期中 查看更多[9]
江苏省常州市武进区2019-2020学年八年级下学期期中数学试题江苏省常州市2019-2020学年八年级下学期期中数学试题(已下线)三垂直模型 (已下线)专题18.30 矩形、菱形、正方形-常考题(专项练习)-2020-2021学年八年级数学下册基础知识专项讲练(人教版)(已下线)专题6.18 矩形、菱形、正方形-常考题(专项练习)-2020-2021学年八年级数学下册基础知识专项讲练(北师大版)(已下线)18.2.3 正方形(含2个课时)(练习)-2022-2023学年八年级数学下册同步精品课堂(人教版)(已下线)22.3.3 正方形的性质与判定-2022-2023学年八年级数学下册《考点·题型·技巧》精讲与精练高分突破系列(沪教版)江苏省宿迁市宿豫区宿豫区实验初级中学2022-2023学年八年级下学期期中数学试题江苏省宿迁市2023-2024学年八年级下学期期中数学试题
更新时间:2020-06-03 21:21:59
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【推荐1】如图,在
中,
,
,D是AB的中点,点E、F分别在AC、BC边上运动
点E不与点A、C重合
,且保持
,连接DE、DF、
在此运动变化的过程中,有下列结论:
;
四边形CEDF的面积随点E、F位置的改变而发生变化;
;
以上结论正确的是______
只填序号
.
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【推荐2】如图,已知在
中,点
,
分别在边
,
上,过点
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的长为______ .
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【推荐1】如图所示,诗的意思是:有正方形的城池一座,四面城墙的正中有门,从南门口(点D)直行8里有一塔(点A),自西门(点E)直行2里至点B,切城角(点C)也可以看见塔,问这座方城每面城墙的长是_________ 里.
![](https://img.xkw.com/dksih/QBM/2021/6/9/2739239706001408/2743676690448384/STEM/c285308b35a5457596436fb11c5f1315.png?resizew=91)
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的顶点
,过
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、
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