如图,在矩形
中,
,
,
是边
上一点,
,
是直线
上一动点,将线
绕点
逆时针旋转
得到线段
,连接
,
,则
的最小值是________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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2022·湖北武汉·模拟预测 查看更多[7]
2022年湖北省武汉市硚口区九年级下学期五月质量检测数学试题(已下线)专题23.10《旋转》全章复习与巩固(培优篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(人教版)新疆维吾尔自治区乌鲁木齐市新疆师范大学附属中学2020-2021学年九年级上学期期中数学试题新疆维吾尔自治区乌鲁木齐市第十五中学2021-2022学年九年级上学期期中数学试题福建省福州市平潭县综合实验区2022-2023学年九年级上学期期中联考数学试卷广东省广州市第二中学2022-2023学年中考一模数学试题(已下线)黄金卷07-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(江苏苏州专用)
更新时间:2022-05-28 10:09:24
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【推荐1】如图,如图,在菱形
中
交
于点
,点
为
的中点,连接
并延长交
于点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f69b26816ac72e2e2e7d9ea0578598.png)
__________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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【推荐2】如图所示,
,点
为
内部一点,作射线
,点
在射线
上,且
,点
与点
关于射线
对称,且直线
与射线
交于点
.当
为等腰三角形时,
的长为__________ .
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【推荐1】如图,在平面直角坐标系中,
,点B是y轴正半轴上一动点,以
为边在
的下方作等腰直角
,且
,点B在y轴上运动时,
的最小值为______ .
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【推荐2】如图,在矩形
中,
,
,点E,F,G,H分别在矩形的各边上,且
,
,则四边形
周长的最小值为________ .
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【推荐1】如图,在等边
中取点
使得
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_________ .
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【推荐2】如图,已知点A坐标
,点B坐标
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的最小值是__________ .
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【推荐1】如图,共顶点正方形
和
中,
,
,将正方形
绕顶点
逆时针旋转角度
(
),即
,
交
边于
.
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ab13fb95596316a1aa1e7d839e337b.png)
______ ;
(2)连接
、
、
,当
为直角三角形时,
的长为______ .
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(2)连接
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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【推荐2】如图,在四边形
中,
,点
在四边形
的内部,且
,
,已知
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b506c24f554901249694f21d9621b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53cd88a2f3151f45782d0b84fd9ac96.png)
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