类比、转化、从特殊到一般等思想方法,在数学学习和研究中经常用到,如下是一个案例,请补充完整.
原题:如图
,在平行四边形
中,点
是
的中点,点
是线段
上一点,
的延长线交射线
于点
.若
,求
的值.
(1)尝试探究
在图
中,过点
作
交
于点
,则
______,
______.
(2)类比延伸
如图
,在原题的条件下,若
,求
的值
用含有
的代数式表示
.试写出解答过程.
(3)拓展迁移
如图
,在四边形
中,
,点
是
的延长线上的一点,
和
相交于点
若
,
,
,则
的值是______
用含
、
的代数式表示
.
原题: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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c022e2d7244ef61eb4673c8d4108d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f803c907aa8d31a9359f24405990fc92.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/14e7afad-9adf-4e7b-85b3-9082ab37ceca.png?resizew=421)
(1)尝试探究
在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d6321e6de60f4e62964c83759def91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e17208df62de9833634fa97bae547ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610e48df11f5f3697227ed771b12da11.png)
(2)类比延伸
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0710741279bc12073a2b24d10091136d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f803c907aa8d31a9359f24405990fc92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(3)拓展迁移
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe2f6543e06a25493855fbbc648be6d.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5704eac867e33aaefd43da48b0f222f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8512c09a56d86987b45d4701d28fd89f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d705409bc9066d65bbbf89091397b3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf73f545ecbe7ce232c0389484cec5d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ec395fe7a4bc51dac28c37085fabcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
更新时间:2024-03-08 12:29:37
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相似题推荐
解答题-作图题
|
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【推荐1】作图题
(1)如图1,A为圆O上一点,请用直尺(不带刻度)和圆规作出圆O的内接正方形
;
(2)我们知道,三角形三条中线相交于一点,请运用上述性质,只用直尺(不带刻度)作图.如图2,在
中,
为
的中点,作
的中点
.
(1)如图1,A为圆O上一点,请用直尺(不带刻度)和圆规作出圆O的内接正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/e916c010-330f-4870-af84-506830f13ff7.png?resizew=120)
(2)我们知道,三角形三条中线相交于一点,请运用上述性质,只用直尺(不带刻度)作图.如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/292249cd-4c82-43f7-8526-594d878ad77d.png?resizew=150)
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解答题-问答题
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【推荐2】已知,矩形
在平面直角坐标系中的位置如图所示,点
在
轴的正半轴上,点
在
轴的正半轴上,已知点
的坐标为
, 反比例函数
的图象经过
的中点
,且与
交于点
,顺次连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf10e49547bcf94d10dc7ac5ddf30f4.png)
求线段
的长;
在线段
上存在一点
,当
的面积等于
时,求点
的坐标;
平面直角坐标系中是否存在一点
,使得
四点构成平行四边形?若存在,请直接写出
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8e13c6dc165b1f956ebafe3c8fc599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/5511a368692de27c58ec48ce968de4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289fc9aad8746b2bb97eb228f7b8cd7d.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf10e49547bcf94d10dc7ac5ddf30f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1274da84fc03902a88cf5506eb67ed08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62295c36d2e2174908c2bec0eb5b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99053e80ae26eaf67a4e4202cc7b0309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/12/97755a4c-21bb-4a52-81d4-5f24bbffa93e.png?resizew=165)
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【推荐1】如图,
在平面直角坐标系中,点C,D分别是
的中点,点A的坐标为
,点D的坐标为
,求点C的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ce5f47bc8e8900bbc8db840e1f6e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00e1beb309e45e52341ce67bc18ce94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
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名校
【推荐2】如图,在半径为6的扇形
中,
,C是
上的一个动点(不与A,B重合),
,垂足分别为点D,E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/7689c665-26b6-4026-afc0-7b7882ac563b.png?resizew=186)
(1)求
的长.
(2)求四边形
各内角的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff5c21185c13eae675906dabd3593c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8536378ad7008f2b0cd2e15e7cfd6eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/7689c665-26b6-4026-afc0-7b7882ac563b.png?resizew=186)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce8737bbbe2e8d297a76dcbce42e4a3.png)
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解答题-证明题
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【推荐1】如图在锐角三角形ABC中,点D,E分别在边AC,AB上,AG⊥BC于点G,AF⊥DE于点F,∠EAF=∠GAC.
(1)求证:△ADE∽△ABC;
(2)如AF=3,AG=5,求△ADE与△ABC的周长之比.
(1)求证:△ADE∽△ABC;
(2)如AF=3,AG=5,求△ADE与△ABC的周长之比.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/ee902ba2-b2b1-4f48-bd6c-18e651604a29.png?resizew=175)
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【推荐2】有两张完全重合的矩形纸片,将其中一张绕点
顺时针旋转
后得到矩形
(如图1),连接
,
,若
,
.
![](https://img.xkw.com/dksih/QBM/2020/6/18/2487242747035648/2490670541160448/STEM/bb27d1f18cbd482298a2a87221631c59.png?resizew=509)
(1)试探究线段
与线段
的数量关系和位置关系,并说明理由;
(2)把
与
剪去,将
绕点
顺时针旋转得
,边
交
于点
(如图2),设旋转角为
,当
为等腰三角形时,求
的度数;
(3)若将
沿
方向平移得到
(如图3),
与
交于点
,
与
交于点
,当
时,求平移的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a6f856872cd504d322ae27919ef2db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b1366c5cef840fdcd88a0994daee04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9228b213dc6b256b752b38a466ebec93.png)
![](https://img.xkw.com/dksih/QBM/2020/6/18/2487242747035648/2490670541160448/STEM/bb27d1f18cbd482298a2a87221631c59.png?resizew=509)
(1)试探究线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
(2)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6d51738ac1bc8b9530ea4a55745c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f56f84dab98e04d18a61fe201942c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5e1441a49e782ff0ef46e776cde06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48eab688cd0cb28c752174967143f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c2ab2ee2baba26987b861b78f8d42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcbe7fdb2a9fd083cf531edea7ab62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(3)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2faf3bebb0ba48c18fed0cab7f045a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6fdb6a8a0058af83e971b5ddb12d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc17f5b154215271127a4d86131fcf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f035db677f9c0b273316792a75997b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed749116f7dfff92b9ec52b7dda4766d.png)
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