如图,在
,
,D为
边上的一点,将
沿
翻折,得到
.连接
,若
,则
到
边上的距离为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c3a59c194a2365abcd14cc3f0e6d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0054fc2bb1c83a250d66e0941a85daf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c91a1d3182423f7b7fee4855e55bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
更新时间:2024-04-04 06:22:04
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【推荐1】
的直径
,弦
,且
于E,则
的面积__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
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【推荐2】如图,正方形
的顶点B在抛物线
的第一象限的图象上,若点B的纵坐标是横坐标的2倍,则对角线
的长为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
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【推荐1】如图,在菱形纸片ABCD中,AB=4,∠A=60°,将菱形纸片翻折,使点A落在CD边的中点E处,折痕为FG,点F、G分别在边AB、AD上,则GE=_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/10/d9e8ce3e-caed-4978-96d3-27dbb2455e91.png?resizew=167)
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【推荐2】将对边平行的纸带折叠成如图所示,已知∠1=52°,则∠α=_____ .
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解题方法
【推荐1】如图,在
中,
,在
的外部和内部(不包括边)分别取点
,
,若
,
,
,
补角等于
,则下列结论:①点
在线段
的垂直平分线上;②
;③
;④
的最大值是
.其中正确的结论是__________ .(填写所有正确结论的序号)
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【推荐2】如图,矩形
中,
,
,点E为
中点,点P从点D出发匀速沿
运动,连接
,点D关于
的对称点为Q,连接
,
,当点Q恰好落在矩形
的对角线上时(不包括对角线端点),
走过的路径长为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
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【推荐1】如图,将刻度尺、含
角的直角三角板和量角器如图摆放(无重叠部分),若三角板
角的顶点在刻度尺上的读数是
,量角器与刻度尺接触点在刻度尺上的读数是
,则该量角器的直径长为________
.(结果保留根号)
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【推荐2】如图,四边形
中,
,
,
,于点E,
于点F,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d2bf8040cce7199cb42e95333aaf5.png)
__________ .
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