已知:如图1,在正方形ABCD中,E,G分别是BC,CD上的点,AE⊥BG于点Q.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/4d3ef116-b97a-4e5f-964f-4c565e9a791d.png?resizew=445)
(1)请直接写出线段AE于BG之间的数量关系.
(2)初探:如图2,在正方形ABCD中,E,F,G分别是BC,AB,CD上的点,FG⊥AE于点Q.请判断线段AE于FG之间的数量关系,并说明理由.
(3)再探:如图3,点P是线段AB上的动点,分别以AP,BP为边在AB的同侧作正方形APCD与正方形PBEF,连接DE分别交线段BC,PC于点M,N,平移线段BC至DG处,连接GE,请判断线段GE于BC之间的数量关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/4d3ef116-b97a-4e5f-964f-4c565e9a791d.png?resizew=445)
(1)请直接写出线段AE于BG之间的数量关系.
(2)初探:如图2,在正方形ABCD中,E,F,G分别是BC,AB,CD上的点,FG⊥AE于点Q.请判断线段AE于FG之间的数量关系,并说明理由.
(3)再探:如图3,点P是线段AB上的动点,分别以AP,BP为边在AB的同侧作正方形APCD与正方形PBEF,连接DE分别交线段BC,PC于点M,N,平移线段BC至DG处,连接GE,请判断线段GE于BC之间的数量关系,并说明理由.
更新时间:2022-09-18 16:48:13
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】当已知三角形一边中点时,我们常通过“倍长中线”来构造全等的两个三角形,从而解决问题.
如图,已知
,点D是
的中点,延长
至点E,使
,连接
,易得到
,从而得到
,
.
已知
,点D是
的中点.
(1)如图1,点E在
上,延长
交
于点F,且
,求证:
;小明同学应用倍长中线的方法,延长
至点M,使
,连接
,请你帮助他写出证明过程.
(2)如图2,点E,G在射线
上,连接
,延长
交
于点F,若
,G为
的中点,求证:
;
(3)在(2)的条件下,若点M是线段
的中点,
,
垂直平分线段
,在
上有一动点P,连接
,当
的周长最小时,求
的度数.
如图,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0ad98ad714864041a632ca949308e417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/decfd06ce63a98658db6f440ad7f8a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b59f0e6f7fa9c50e7f5cc146ba1af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7fc2cd021ddef301baf6ccb2fc8e6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/1/9bc638a2-3a2c-450f-af1f-e486c5385b23.png?resizew=182)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/1/069e631b-d407-4db0-a40a-aa2b54e803d7.png?resizew=609)
(1)如图1,点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8bfe298fb2948547723517cd2ec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b59f0e6f7fa9c50e7f5cc146ba1af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5710961e98c6811400da2c0b778d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(2)如图2,点E,G在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec45d10ee915662f63f9d3925d6ee539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648fec702a9e60c7e577ff7f54405c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6f7091bf0bb4b27a436d7cc29ca9d.png)
(3)在(2)的条件下,若点M是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e9a4522cde88082657e7119c7df3a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d2abf13c2842f58654abf73c6b4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9d2abf13c2842f58654abf73c6b4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49fa1b7c7a71699e36794a14057a78b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffbb6763c631d9680525050c76218124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4257874d7910eb357589dc1954bdf76.png)
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名校
【推荐2】已知:如图1,平面直角坐标系中,点
为坐标原点,
的三个顶点都在坐标轴上,
,点
坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/8a6e9cad-de1d-4b4f-9b40-4abf56a70ae7.png?resizew=270)
(1)求
点的坐标;
(2)如图2,点
从点
出发,以2个单位每秒的速度沿
轴负方向运动,运动时间为
,连接
,用含有
的式子表示
的面积;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/9496ea00-62ed-400f-8417-62da7aa857b3.png?resizew=267)
(3)在(2)的条件下,如图3,点
在
上,
,
经过点
,过点
作
交
轴于点
,若
,求
与
的和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f3b0e2bedfe5195443459072d798e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4c5efbb0d9b7c98c79c7d9ef2fbef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2509424ab920016025f7ef31c760d816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96029b73946f3d6c3039a9e18612103.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/8a6e9cad-de1d-4b4f-9b40-4abf56a70ae7.png?resizew=270)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671b087abb1d2692c8be5b16846c4690.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8134b1163ca3cd2e34ff17fc81078c3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/9496ea00-62ed-400f-8417-62da7aa857b3.png?resizew=267)
(3)在(2)的条件下,如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce346afd941a36ddc12a4d6975eab810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481fe0098561078ace90b18877e62243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079bb274024a4295421d986fce990393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f043d3111e0a677422438badd37e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/4df368bc-3537-4c99-ac01-af109e8aa6dd.png?resizew=276)
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解答题-证明题
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【推荐1】如图,已知
和
均是等边三角形,点
、
、
在同一条直线上,
与
交于点
,
与
交于点
,
与
交于点
,连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/4cb49ef6-2c1b-47e6-92d5-107ce79f6cc4.png?resizew=182)
求证:①
;②
;③
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78c42618c038aa8bf15cb6151d3209b.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/4cb49ef6-2c1b-47e6-92d5-107ce79f6cc4.png?resizew=182)
求证:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e6363330b33ca9feda927e6ffd3088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f28d5f302d6614b5c74031c4d22120d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c00a6ae62c437244f9ea9107042725.png)
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解答题-问答题
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(0.4)
【推荐2】已知:在平面直角坐标系中,抛物线
的图象交
轴于点
和点
(点
在点
的左侧),交
轴于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/0b979378-a4fc-4844-804d-256cba0424c0.png?resizew=508)
(1)如图1,求拋物线的解析式;
(2)如图2,点
在第四象限的拋物线上,过点
作
轴的平行线交抛物线于点
,连按
并延长交
轴于点
,若
,求点
的坐标;
(3)如图3,在(2)的条件下,连接
,点
在
间的拋物线上,连接
,点
在y轴上,连接
和
,
,
,
与
交于点
,连接
,求直线
的解折式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1a3680068e060460973a88ba8d309e.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/0b979378-a4fc-4844-804d-256cba0424c0.png?resizew=508)
(1)如图1,求拋物线的解析式;
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb388a36bd5caaa51b7e3c898e3c906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)如图3,在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e478787ebfeb68a5a7594dbd9eecd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4740a2e4af793a09daf876b244311866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2765bdae4ca65604dd52a1f76e4cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacc87d259ff84622e7f676597b69fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacc87d259ff84622e7f676597b69fb6.png)
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解答题-证明题
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【推荐1】如图所示,任意五边形
,
、
、
、
分别为
、
、
、
的中点,
、
分别为
、
的中点,求证:
且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c487a9c47e492d6109d02e36649865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90d294dfdf6c502c9c9e89b9f64dcf5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/355abd3e-828e-4f3c-8b31-7a8f4c1b6884.png?resizew=254)
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解答题-证明题
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较难
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【推荐2】如图,已知▱ABCD中,AE平分∠BAD交DC于E,DF⊥BC于F,交AE于G,且AD=DF.过点D作DC的垂线,分别交AE、AB于点M、N.
(1)若M为AG中点,且DM=2,求DE的长;
(2)求证:AB=CF+DM.
(1)若M为AG中点,且DM=2,求DE的长;
(2)求证:AB=CF+DM.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/fc3afed0-389f-4c96-beed-6ff78561d1bf.png?resizew=168)
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解答题-问答题
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较难
(0.4)
【推荐1】问题提出
(1)如图1,在正方形
中,点N,M分别在边
上,连接
.已知
,将
绕点A顺时针旋转
,点D与点B重合,得到
.易证:
__________
(选填“
”或“
”),从而可得:
__________
(选填“
”“
”或“
”);
问题探究
(2)在题(1)条件下,若
,
,求正方形
的边长;
问题解决
(3)如图2,工人谢师傅现计划在一块如图所示的矩形材料
中加工出一块四边形材料
,要求加工出的材料中
,点M,N分别在边
上,同时工厂为了能继续利用加工后的剩余材料,要求点M落在
边上,且满足
,已知矩形的边
,
,若谢师傅加工材料时选择
的长度为4,请问
的长度是否满足要求,并计算说明.
(1)如图1,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67108ae894bf1372813dca7a08e8a902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4794cf7c57bdd4825d9e6615e2527a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101da161ae17652ccbe7d3f888762c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246b32e19ae21b0cd1f826c47f517ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0702bd0b088224b2aedcc925f313d93f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7465c3848d832ec772b6c1510d61aa59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955f8ccd3819df2b05ff5fb32e84b5df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1dc0b2ae327d97126c53ce1ab68efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
问题探究
(2)在题(1)条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c8599965e62eae0bf34701f1a914a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe14b7ecc401749db077e8965c25d161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
问题解决
(3)如图2,工人谢师傅现计划在一块如图所示的矩形材料
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b49da6ed5141fe911ec817d5f538bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42ac94c7c00b01d34a39e72cc4ee517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ced9844fe2e052c70486af0740afa63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32977ab723754c40be0ecdcd91cc84e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88c5025689144c57cf36d1851ebc026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】如图,在四边形
中,点
是直线
上一点,将射线
绕点A逆时针旋转
度交直线
于点
.
(1)如图①,若四边形
为菱形,点
在线段
上,
,
,求证:
;
(2)如图②,若四边形
为正方形,点
在线段
的延长线上,
,连接
,试猜想线段
,
与
之间的数量关系,并加以证明;
(3)若四边形
为正方形,
,
,
,连接
,请直接写出
的长.
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/26/d240943a-a3f3-40ce-8216-90847a3e793a.png?resizew=427)
(1)如图①,若四边形
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
(2)如图②,若四边形
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255a3e8a03775d0fc699ee1f7bb61a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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