如图,在
中,
,
,
,
,
是
的平分线.若
,
分别是
和
上的动点,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/09315943-4f75-42e0-8056-f4ac0ca446e6.png?resizew=169)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25936291abb6432ed5a710ebf0ea195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ead14d753c0e9d2c481f770c3a6a436.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/09315943-4f75-42e0-8056-f4ac0ca446e6.png?resizew=169)
A.5 | B.![]() | C.![]() | D.![]() |
更新时间:2024-02-18 17:44:49
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相似题推荐
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名校
【推荐1】如图,∠AOB=45°,点E、F分别在射线OA、OB上,EF=8,S△OEF=24,点P是直线EF上的一个动点,点P关于OA的对称的点为P1,点P关于OB的对称点为P2,当点P在直线EF上运动时,
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339120d6246db0d108de3271e6aff4b3.png)
A.8 | B.16 | C.18 | D.36 |
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【推荐2】A、B、C是直线L上三点,P为直线外一点,若PA=2cm,PB=3cm,PC=5cm,则P到直线L的距离是( )
A.等于2cm | B.大于2cm | C.不小于2cm | D.不大于2cm |
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【推荐1】如图,在△ABC中,AB=AC=5,BD是AC边上的高线,DC=1,则BD的长等于( )
![](https://img.xkw.com/dksih/QBM/2018/12/28/2106432751067136/2108795216371712/STEM/c042707c5cb6406baab7b542c4fb5ccd.png?resizew=59)
![](https://img.xkw.com/dksih/QBM/2018/12/28/2106432751067136/2108795216371712/STEM/c042707c5cb6406baab7b542c4fb5ccd.png?resizew=59)
A.2 | B.3 |
C.4 | D.![]() |
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【推荐2】如图,已知
,延长
至
,使
;延长
至
,使
;延长
至
,使
;连接
、
、
,得
.若
的面积为
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dd6e7c88601b4c50b06f1238fdd95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1038c0e71e2c756f906b7b474d3af48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979854d62216c57b8eff7f335e7f9e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3634979dfcebf857b20874dd320d80b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3634979dfcebf857b20874dd320d80b3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/22/80adae29-6788-4bc6-99a3-897a7a1ad832.png?resizew=144)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,正方形
的边长为7,对角线
,
相交于点
,过点
作
,分别交
,
于点
,
,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/27/ef9757d6-c78c-4852-926a-4f080dba61a3.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acc3b50b12699a4a9a4cc391b8f5bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/27/ef9757d6-c78c-4852-926a-4f080dba61a3.png?resizew=148)
A.3 | B.4 | C.5 | D.7 |
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【推荐2】如图,矩形ABCD,沿对角线BD翻折△BCD,点E是点C的落点,BE交AD于点F,若CD=4,EF=3,则BD的长为( )
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485394545795072/2490926332755968/STEM/3e8540d6937e4bf4a983f294c3af8400.png?resizew=127)
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485394545795072/2490926332755968/STEM/3e8540d6937e4bf4a983f294c3af8400.png?resizew=127)
A.5 | B.5![]() | C.4![]() | D.10 |
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【推荐1】给出下面两个命题:①如图1,若
,
,则
垂直平分
;②如图2,若点
到
,
的距离
,
相等,则
平分
.其中真命题是( )
![](https://img.xkw.com/dksih/QBM/2021/3/24/2684834563571712/2684908511813632/STEM/6b65da36b8d54d61a802439109d50426.png?resizew=499)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d344c4876db606024d81e6de01fe06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://img.xkw.com/dksih/QBM/2021/3/24/2684834563571712/2684908511813632/STEM/6b65da36b8d54d61a802439109d50426.png?resizew=499)
A.① | B.② | C.①② | D.无 |
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【推荐2】如图,是作线段AB的垂直平分线的尺规作图,其中没有用到依据是( )
![](https://img.xkw.com/dksih/QBM/2019/6/4/2218203892326400/2218930376794112/STEM/35f26eda2d824693a73fcf10fac4c871.png?resizew=144)
![](https://img.xkw.com/dksih/QBM/2019/6/4/2218203892326400/2218930376794112/STEM/35f26eda2d824693a73fcf10fac4c871.png?resizew=144)
A.同圆或等圆的半径相等 | B.两点之间线段最短 |
C.到线段两端距离相等的点在线段的垂直平分线上 | D.两点确定一条直线 |
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