如图,矩形OABC的顶点B的坐标为(3,2),则对角线AC=_____ .
![](https://img.xkw.com/dksih/QBM/2020/9/8/2545099546877952/2549852480249856/STEM/3a290fe30ebe409980f280c248b1ea47.png?resizew=194)
更新时间:2020-09-14 23:11:03
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【推荐1】图1是一张可以折叠的小床展开后支撑起来放在地面的示意图,此时点
在同一直线上,且
,图2是小床支撑脚
折叠的示意图,在折叠过程中,
变形为四边形
,最后折叠形成一条线段“
”.某家装厂设计的折叠床是
,
,
①此时
应该是多长___________ ;
②折叠时,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023d5cda2c0f9427a7639c4778daddf0.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd40d480b4b0a70f4e0dc10f601beff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d69c69c46ac34f560546c22af120be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ecdb698bd9d00d684430e911e4d99d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cee49e97546d466ba3ee630e08cdc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9d0d90bf492735a174a88df5704f92.png)
①此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37927b3daf69d9168ab7faa0247cbff8.png)
②折叠时,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf05c4113c268729baa48a937a5904cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023d5cda2c0f9427a7639c4778daddf0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/34d11efb-9250-4d05-b4d2-781c2723fe06.png?resizew=412)
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【推荐2】如图,
,矩形
的顶点
,
分别在边
、
上,当点
在边
上运动时,点
随之在
上运动,矩形
的形状保持不变,其中
,
.在运动过程中点
到点
的最大距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a563c50a7f6d10fa46339d7107fc85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/2/58a43174-ef60-4508-a324-711bb24fdb77.png?resizew=196)
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【推荐1】如图,已知点
,
,点C在y轴上运动.将
绕A顺时针旋转
得到
,则
的最小值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0408eddf4564e37a4666ba1e524cb8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deba9ffbdaa157b1152e81ae45e95c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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【推荐2】矩形ABCD中,AD = 8,半径为5的⊙O与BC相切,且经过A、D两点,则AB =____ .
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