如图,平行四边形
中,
,点M,N分别为线段
上的动点(含端点),点E,F,G分别为
的中点,则
长度的最大值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46e48a1c441be8ae8bdfb2f6a751d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf021aeca0c3cacd4bbffd7479a1e25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9b528b3c7420c7c0e9fefd9d99fb87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
A.![]() | B.![]() | C.3 | D.5 |
更新时间:2024-05-11 20:51:44
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【推荐1】阅读:如果两个动点到一个定点的距离的比为定值,且这两个动点与定点连线所成角的度数也为定值,那么这两动点的运动路径相同.
应用:如图,点O是矩形
的对角线AC的中点,
,以O为直角顶点的
的顶点P在边
上,
,当P在
上运动时,
的最大值为( )
应用:如图,点O是矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccffe5b87a6dca1829ae925c371476a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715156591c926031350766850b970a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
A.1 | B.![]() | C.2 | D.![]() |
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【推荐2】如图,
中,
,
的平分线
与边
的垂直平分线
相交于点D,
交AB的延长线于点E,
于点F,现有下列结论:①
;②
;③
平分
;④
.其中正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/a446dafc-67c4-4f09-869e-069f0ae25a36.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0242af77803f8550ba044a9af158b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c962fe4f47732b8e6e83d17ff2b9af13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2049c441e4707751f4ca5a7995edbe4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/a446dafc-67c4-4f09-869e-069f0ae25a36.png?resizew=161)
A.①② | B.②④ | C.①②④ | D.①②③④ |
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【推荐1】如图,在正方形
中,对角线
,
相交于点
,
,
是
的平分线,
于点
,点
是直线
上的一个动点,则
的最小值是( )
![](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/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8435c79aa651da269273e4c701ff54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23af7baf19feaed20b5a53208c03d0e4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】如图,正方形ABCD中,AB=12,点E在边CD上,且BG=CG,将ΔADE沿AE对折至ΔAFE,延长EF交边BC于点G,连接AG、CF,下列结论:①ΔABG≌ΔAFG;②∠EAG=45°;③CE=3DE;④AG∥CF:⑤
,其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974506295001088/2975034690084864/STEM/367f907d-443c-490b-8836-a476bb1254d9.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab2b8b06f57ea13ab5e00c0a4de3f84.png)
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974506295001088/2975034690084864/STEM/367f907d-443c-490b-8836-a476bb1254d9.png?resizew=138)
A.2个 | B.3个 | C.4个 | D.5个 |
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【推荐1】如图,平行四边形
,
为
中点,延长
至
,使
:
,连接
交
于点
,若
的面积是
,则五边形
的面积是( )
![](https://img.xkw.com/dksih/QBM/2022/5/25/2986582241902592/2988483567968256/STEM/5667ee5589fd4d04ba96da437e32ada5.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e1c47a0a256b3d33d5c0031fdad722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d480e8b2c516612b47a19cb62d9bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d14275cd83722cd017c4c7e1709cf554.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2986582241902592/2988483567968256/STEM/5667ee5589fd4d04ba96da437e32ada5.png?resizew=199)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,平行四边形
的对角线
,
相交于点
,
平分
,分别交
,
于点
、
.连接
,
,
,则下列结论:①
;②
;③
;④
,其中结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804600395317248/2805875007930368/STEM/05781864455b4f6392d799cae8e06615.png?resizew=241)
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9d6aebbcddbaf996cc9c50aff400de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1719410d21e3de1242366ce2965e838c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da41399c01d05d894a9641894e52b06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418533a51b97bd392cee1ed5b012efef.png)
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804600395317248/2805875007930368/STEM/05781864455b4f6392d799cae8e06615.png?resizew=241)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】如图,矩形
中,
,E为
的中点,F为
上一动点,P为
中点,连接
,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/2023/1/20/3156775992090624/3255835324661760/STEM/007ee73d6cd642e6bd5ded5aaed96514.png?resizew=206)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b243f607be47bda30d81605f2bafa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2023/1/20/3156775992090624/3255835324661760/STEM/007ee73d6cd642e6bd5ded5aaed96514.png?resizew=206)
A.2 | B.4 | C.![]() | D.![]() |
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【推荐2】如图,在四边形ABCD中,AB∥CD,∠C=90°,AB=8,AD=CD=5,点M为BC上异于B、C的一定点,点N为AB上的一动点,E、F分别为DM、MN的中点,当N从A到B的运动过程中,线段EF扫过图形的面积为 ( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/52d307ef-04a7-4042-a427-d8f509dae675.png?resizew=165)
A.4 | B.4.5 | C.5 | D.6 |
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