如图,
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/26/7537faee-95b0-489d-9176-2cfb36fd52cc.png?resizew=177)
(1)用直尺和圆规作AB的垂直平分线,分别交BC,AB于点D,E点;(保留作图痕迹,不要求写作法)
(2)在(1)的条件下,求DE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/26/7537faee-95b0-489d-9176-2cfb36fd52cc.png?resizew=177)
(1)用直尺和圆规作AB的垂直平分线,分别交BC,AB于点D,E点;(保留作图痕迹,不要求写作法)
(2)在(1)的条件下,求DE的长.
更新时间:2022-06-21 21:53:07
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解答题-证明题
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【推荐1】如图1,在正方形ABCD中,点E是边AB上的一个动点(点E与点A,B不重合)连接CE,过点B作BF⊥CE于点G,交AD于点F.
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(3)如图3,当点E运动到AB中点时,连接DG,求证:DC=DG.
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【推荐2】如图所示,在△ABC中,AB =AC,∠BAC = 100°,AB的垂直平分线交AB于点D,交BC于点E,求∠AEC的度数.
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解答题-作图题
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名校
【推荐1】如图是由小正方形组成的
网格,每个小正方形的顶点叫做格点,仅用无刻度的直尺在给定的网格中完成画图,并保留必要的作图痕迹.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
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【推荐2】如图,点
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