如图,将边长为3的正方形
沿直线
折叠,使点
的对应点
落在边
上(点
不与点
重合),点
落在点
处,
与
交于点
,折痕分别与边
,
交于点
,连接
.
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65436512ecbaefba4ac8123c55094211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731b8f40b861ee6bb066e537780c4df7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4fdb5421b7ccd0b89dd3943e5809765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
2023·湖北·中考真题 查看更多[5]
2023年湖北省潜江、天门、仙桃、江汉油田中考数学真题(已下线)专题30图形的对称与翻折(优选真题60道)-学易金卷:三年(2021-2023)中考数学真题分项汇编【全国通用】(已下线)易错模型02+相似模型2(十大易错分析+变式训练+易错题通关)-备战2024年中考数学考试易错题(全国通用)(已下线)专题04 四边形的证明与计算(全等、相似、边角计算)-2024年中考数学二轮热点题型归纳与变式演练(全国通用)(已下线)专题16 四边形综合(二)(六大热点题型归纳)-2024年中考数学二轮热点题型归纳与变式演练(云南专用)
更新时间:2023-06-28 10:59:53
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】已知:
的两条弦
,
相交于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/2a1a0953-ec60-4c51-bb80-5a5be7a22584.png?resizew=247)
(1)如图1,连接
.求证:
.
(2)如图2,若
,点
为弧
上一点,
,
交
于点
,连接
、
.
①求
的度数(用含
的代数式表示).
②若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/2a1a0953-ec60-4c51-bb80-5a5be7a22584.png?resizew=247)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c33f05acd392b64410ec012ac18b5ab.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.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/373afb4faa99bd57e7dcf777e674c28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab2ccc075e9eb14adcaad5feaf69896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f9c6a2aab65e079a9a76e33f9458aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
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解答题-计算题
|
适中
(0.65)
【推荐2】数学活动:折纸与证明.
折纸,常常能为证明一个命题提供思路和方法.
如图1,在
中,
,怎样证明
呢?
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/7d9f74e3-5676-4fbd-892b-7a636e568769.png?resizew=315)
如图2,把
沿
的平分线
翻折,因为
,所以,点C落在
上的点
处.于是,由
,
,可得
.
感悟与应用:
(1)如图3,
是
的高,
.若
,
,求
的长.小龙同学的解法是:将
沿
折叠,点C落在
边上的点
处……,画出图形并写出完整的解题过程;
(2)如图4,
是
的角平分线,
.线段
、
、
之间有怎样的数量关系?写出你的猜想并证明.
折纸,常常能为证明一个命题提供思路和方法.
如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6f337c00a6d4bf1e7580d8888db3d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/7d9f74e3-5676-4fbd-892b-7a636e568769.png?resizew=315)
如图2,把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590c279daace2aa6f040433b1baf226f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ebcaf0a0d043d94769fb90e49668bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6f337c00a6d4bf1e7580d8888db3d6.png)
感悟与应用:
(1)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9af7ab732d431dd78e84db9586d3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.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/b4c8a9c4957431681ddfc77895a88508.png)
(2)如图4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9af7ab732d431dd78e84db9586d3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/47cb4b7f-bce7-4140-93f9-eb6e6c6b44c5.png?resizew=314)
您最近一年使用:0次
解答题-问答题
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名校
【推荐1】如图,已知AB=12,AB⊥BC于B,AB⊥AD于A,AD=5,BC=10点E是CD的中点,求AE的长.
您最近一年使用:0次
解答题-问答题
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名校
【推荐2】已知:如图,Rt△ABC中,∠C=90°,AC=
,BC=
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/11/a95adcb0-ad0d-46b8-a028-e7174a9e46ef.png?resizew=180)
求(1)Rt△ABC的面积;
(2)斜边AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a581f283460235482116fbe3ba41efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53204688086b1d0111e91cb49fa0ac61.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/11/a95adcb0-ad0d-46b8-a028-e7174a9e46ef.png?resizew=180)
求(1)Rt△ABC的面积;
(2)斜边AB的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】【推理】
如图1,在边长为10的正方形
中,点
是
上一动点,将正方形沿着
折叠,点
落在点
处,连接
,
,延长
交
于点
,
与
交于点
.
.
【运用】
(2)如图2,在【推理】条件下,延长
交
于点
,若
,求线段
的长.
【拓展】
(3)如图3,在【推理】条件下,连接
,则线段
的最小值为______.
如图1,在边长为10的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81818f7742c8035eef5bd69f5f0b33b9.png)
【运用】
(2)如图2,在【推理】条件下,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ff13b4da65c7da3d898ba58e967b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
【拓展】
(3)如图3,在【推理】条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,将正方形
放在平面直角坐标系中,顶点
为原点,顶点
,
分别在
轴和
轴上,
点坐标为
,动点
在
边上(不与端点重合),将
沿
翻折,点
的对称点为
点.
(1)如图①,当
平分
时,
的度数为______;
(2)如图②,过点
作
轴交
于点
,交
于点
.当
为等腰直角三角形时,求
点的坐标;
(3)如图③,延长
交
于点
,当点
在边
上移动时,
的周长是否发生变化?如果是,请求出变化范围,如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d76e8409eaeb0b89c52d153b94644c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9fdebbc8eed7c55c9148f0068e7a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/29/01ca07bb-f48b-46c5-ba40-5a3940ccb3b8.png?resizew=581)
(1)如图①,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd1bc0388e7fad3e849ca39c67f5034.png)
(2)如图②,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0cb517e9cfdcbb58ae196f99c0e43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b238947afe06e2fb5f2a98bde3bd0f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)如图③,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】已知,作
,作
,交
于D,请完成以下题目:
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c68a8d6c9a5884229a7f2891c505cad.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5c583d43873691cdf849be741b79ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f291575950d5a6b73815a528246054f8.png)
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解答题-证明题
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适中
(0.65)
【推荐2】△ABC是边长为4个单位长度的等边三角形,点F是边BC上的点,FD⊥AB,FE⊥AC,
![](https://img.xkw.com/dksih/QBM/2015/2/4/1573793454186496/1573793460453376/STEM/14453774ad254fe893e06800b4a740fc.png)
(1)求证:△BDF∽△CEF;
(2)已知A、D、F、E四点在同一个圆上,若tan∠EDF=
,求此圆的半径.
(3)设BF=m,四边形ADFE面积为S,求出S与m之间的函数关系,并探究当m为何值时S取最大值;
![](https://img.xkw.com/dksih/QBM/2015/2/4/1573793454186496/1573793460453376/STEM/14453774ad254fe893e06800b4a740fc.png)
(1)求证:△BDF∽△CEF;
(2)已知A、D、F、E四点在同一个圆上,若tan∠EDF=
![](https://img.xkw.com/dksih/QBM/2015/2/4/1573793454186496/1573793460453376/STEM/f2b2344185aa4b89a03f09b97264c235.png)
(3)设BF=m,四边形ADFE面积为S,求出S与m之间的函数关系,并探究当m为何值时S取最大值;
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