在四边形中,
,
,
分别为边
,
上的两点,连接
,
相交于点
,且满足
.
(1)【基础运用】如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e63e1069c7c85d8ba6eab02bcd292c.png)
(2)【类比探究】如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(3)【拓展迁移】如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121f9f8e6b6d927c43d85a0866231c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4206c78d9875766de41b18d2f0531b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
更新时间:2024-03-20 14:00:48
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】如图,已知
是等边三角形,点
、
分别在边
、
上,且
,联结
并延长至点
,使
,联结
,
,联结
并延长交
于点
.
![](https://img.xkw.com/dksih/QBM/2021/1/21/2640953993592832/2642224027631616/STEM/4a8727636e63449eab71a129faed6b69.png?resizew=138)
(1)求证:
;
(2)若
,求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b70c662d45c1b741ea5ed7a31007cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/2021/1/21/2640953993592832/2642224027631616/STEM/4a8727636e63449eab71a129faed6b69.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47a70a2811c174e73ce1beeb80c75c1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b6bef27de230acad352f25e954f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591f1c72e62d69855dee40059a0f419b.png)
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解答题-证明题
|
较难
(0.4)
真题
【推荐2】如图,等腰
内接于
,
,
是边
上的中线,过点
作
的平行线交
的延长线于点
,
交
于点
,连接
.
为
的切线;
(2)若
的半径为
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae55c291edfea52960e77a0593a7f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
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【推荐3】类比等腰三角形的定义,我们定义:有一组邻边相等的凸四边形叫做“邻好四边形”.
(1)概念理解:
如图1,在四边形
中,添加一个条件,使得四边形
是“邻好四边形”,请写出你添加的一个条件________;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/7d9119bd-d037-4a44-b5c3-86fc49139f71.png?resizew=364)
(2)概念延伸:
下列说法正确的是________.(填入相应的序号)
①对角线互相平分的“邻好四边形”是菱形;
②一组对边平行,另一组对边相等的“邻好四边形”是菱形;
③有两个内角为直角的“邻好四边形”是正方形;
④一组对边平行,另一组对边相等且有一个内角是直角的“邻好四边形”是正方形;
(3)问题探究:
如图
,小红画了一个
,其中
,
,
,并将
沿
的平分线
方向平移得到
,连结
,
,要使平移后的四边形
是“邻好四边形”应平移多少距离(即线段
的长)?
(1)概念理解:
如图1,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/7d9119bd-d037-4a44-b5c3-86fc49139f71.png?resizew=364)
(2)概念延伸:
下列说法正确的是________.(填入相应的序号)
①对角线互相平分的“邻好四边形”是菱形;
②一组对边平行,另一组对边相等的“邻好四边形”是菱形;
③有两个内角为直角的“邻好四边形”是正方形;
④一组对边平行,另一组对边相等且有一个内角是直角的“邻好四边形”是正方形;
(3)问题探究:
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71399ec88d4a3bd807e23bef04dce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9302e7301169a8085580b35ca9323d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
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解答题-证明题
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(0.4)
真题
名校
【推荐1】如图,在矩形ABCD中,AB=6,BC=4,点M、N分别在AB、AD上,且MN⊥MC,点E为CD的中点,连接BE交MC于点F.
(2)若
=2,求
的值;
(3)若MN∥BE,求
的值.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c593ba4e7d7e89e66a926591022adcb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4011a83dfd460a5d69728131da8ab2.png)
(3)若MN∥BE,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4011a83dfd460a5d69728131da8ab2.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】如图,正方形
的顶点B在矩形
的边
上运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/09bccb07-bb69-4ba4-b793-584065534e33.png?resizew=332)
(1)如图1,点C在
上,求
的大小;
(2)如图1,若C是
的中点,求证:
;
(3)如图2,若
,
,设
,
,直接写出y与x的函数解析式(不需要写自变量的取值范围).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad56938ea04db4e90efb3f29c1b6b41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/09bccb07-bb69-4ba4-b793-584065534e33.png?resizew=332)
(1)如图1,点C在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c767d5ddd42ea81075c4a3e30f6dba40.png)
(2)如图1,若C是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea39c156a4858d85b7f1238eca69f22.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1496042c1d721cffd25053e997a9a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8f8dc90795132b38fd9392ebf0f75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6f0bff9a2500d7488cebf38df42424.png)
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解答题-问答题
|
较难
(0.4)
【推荐1】如图,在
中,
,
,
,
,动点P从点A出发,沿
方向以每秒6个单位长度的速度向终点B运动,连结
,作点A关于
的对称点
,连结
,
.设点P的运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/8f44bf52-dd03-4eb7-beb2-f3fc1ee01b71.png?resizew=278)
(1)
__________
,
__________;
(2)连结
,则
的最小值为__________;
(3)连结
,当
在
边上时(不包括
的顶点),求
的长;
(4)当
时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76faa363d8d18fce35d03cb8b32a414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30912a21aa3d8412f8e020e13ce4cd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b8a4b0e72a4de1da975168b243a325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f450f5ce2ecf8e546d16edaaa9bdb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a21897349d3d7c94419692106887153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b36c130a297aa266e8d3e28c568f48.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/8f44bf52-dd03-4eb7-beb2-f3fc1ee01b71.png?resizew=278)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
(3)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb97aff0960e2640314888a38e7169c.png)
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8b4c227c54856e48e971bd75fc3a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】已知D为△ABC边BC上的一个动点(不与B,C重合),过D作DE∥AC交AB于点E,作DF∥AB交AC于点F.
(1)证明:△BDE∽△DCF;
(2)若△ABC的面积为10,点G为线段AF上的任意一点,设FC:AC=n,△DEG的面积为S,求S关于n的关系式,并求S的最大值.
(1)证明:△BDE∽△DCF;
(2)若△ABC的面积为10,点G为线段AF上的任意一点,设FC:AC=n,△DEG的面积为S,求S关于n的关系式,并求S的最大值.
![](https://img.xkw.com/dksih/QBM/2016/12/9/1579032521760768/1579032522244096/STEM/30e9482ed55e49c39ea4e65cdab1e5e3.png)
您最近一年使用:0次