如图,在平行四边形
中,
,
于点
,
为
的中点,连接
、
,下列结论:①
;②
;③
;④
;其中正确结论有_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f62cec6f26ed02649be24efe08c985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a161d8b6f68b751df8d694a6cc562896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184daf07b1573ad173f4a71a6d5c6289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8bc98ff21622e49192aaca50ab4193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96225faebd4f6bdfd6695c94cb67f0df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebc66cff2bc9e59f384cfc7c800578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/9cae5ce5-cda3-4983-a997-3d242667afa9.png?resizew=156)
更新时间:2022-10-17 05:25:01
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解题方法
【推荐1】如图,在矩形
中,
,
,
和
交于点
,点
是边
上的动点(不与点
,
重合),连接
并延长交
于点
,连接
,若
是等腰三角形,则
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90c780dac29ff8b7df5881d3b33abab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f201a40fedca4ad14db193f4db2127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
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【推荐2】如图,AE平分∠BAC,BD=DC,DE⊥BC,EM⊥AB.若AB=9,AC=5,则AM的长为______ .
![](https://img.xkw.com/dksih/QBM/2019/4/13/2181679424815104/2182501954371585/STEM/339f80ba579644eca23966839b8c2861.png?resizew=150)
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【推荐1】如图,在□ABCD中,AB=10,BC=5,BN平分∠ABC交CD于点N,交AD的延长线于点M,则下列结论:①DM=5;②线段BM、CD互相平分;③BD⊥AM;④△BCN是等边三角形;⑤AN⊥BM,其中正确的有______________ (填序号).
![](https://img.xkw.com/dksih/QBM/2020/4/28/2451318405545984/2453361852243968/STEM/29289bdb422c45c7b7b3f5f6eb2d134c.png?resizew=198)
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【推荐2】如图,在
中,
,
,
,
,
,
都是等边三角形,下列结论中:①
;②四边形
是平行四边形;③
;④
.正确的是______ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
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【推荐1】如图,
中,
,
,点
是边
的中点,以
为底边在其右侧作等腰三角形
,使
,连接
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
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【推荐2】如图,将一张边长为4cm的正方彩纸片
折叠,使点
落在点
处,折痕经过点
交边
于点
.连接
、
,若
,则
的长为______ cm.
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【推荐1】如图,在四边形
中,对角线
互相垂直平分,点
,Q分别是边
,线段
上的点,连接
与
相交于点
.
,且
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___________
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时,设
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的长![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
___________ .(用含a的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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【推荐2】如图,在菱形ABCD中,AC交BD于P,E为BC上一点,AE交BD于F,若AB=AE,
,则下列结论:①AF=AP;②AE=FD;③BE=AF.正确的是______ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c287148ba929ea431b8d250623e1c328.png)
![](https://img.xkw.com/dksih/QBM/2020/6/8/2480115450888192/2480977845207041/STEM/f93e8ec2-2149-4748-8d73-1108c79515a3.png)
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