如图,在
中,
,以
为直径的
交
于点
,过
作
的切线,与
交于点
,与
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/3bb422cf-f731-4192-904c-1f9bf8735809.png?resizew=151)
(1)求证:
;
(2)若
,
,
,则图中阴影部分的面积为________.(用含
的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](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/3d97cdc586744d208b6f69c9813af977.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/3bb422cf-f731-4192-904c-1f9bf8735809.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d276d0010fd458383ea3dd61415e1aa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e9aff449ebf13af774169394ac5a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19338598965bb3856cdd0236bbf694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
更新时间:2023-12-17 23:14:40
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图①,在正方形ABCD中,点N、M分别在边BC、CD上,连接AM、AN、MN.∠MAN=
,将△AMD绕点A顺时针旋转
,点D与点B重合,得到△ABE. 易证:
,从而得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/e696e3ce-9e1e-42a5-96d7-6cee38585c10.png?resizew=256)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/080118a8-923a-40e7-843d-ffbf5b110036.png?resizew=226)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/e3b83fdb-692f-458d-98cf-3388fdfa9d06.png?resizew=212)
【实践探究】
(1)如图②,在正方形ABCD中,点E,F在对角线BD上,且
,请你直接写出线段BE,EF,FD之间的数量关系___.
【拓展】
(2)如图③,正方形ABCD的边长为10,点P为边CD上一点,
于E,Q为BP中点,连接CQ并延长交BD于点F,且
,则PD的长为___.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f45ae25b1071c617d92b8e40bc75c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a760864f397a1df8738e9d8af463c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/e696e3ce-9e1e-42a5-96d7-6cee38585c10.png?resizew=256)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/080118a8-923a-40e7-843d-ffbf5b110036.png?resizew=226)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/e3b83fdb-692f-458d-98cf-3388fdfa9d06.png?resizew=212)
【实践探究】
(1)如图②,在正方形ABCD中,点E,F在对角线BD上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1660e78fa0ebf52a5d9045516422b6c.png)
【拓展】
(2)如图③,正方形ABCD的边长为10,点P为边CD上一点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d31767eb718a0327eca546fe6a189cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bebd189aed25543fe2a3094ddf9973f.png)
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解题方法
【推荐2】如图,在等腰三角形
中,
,以
为直径的
交
于点
,交
于点
,过点
作
的切线
,交
于点
,连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1412d0a9085502d24afa2b13f3aa4c.png)
![](https://img.xkw.com/dksih/QBM/2020/7/21/2510565696339968/2510897542881280/STEM/6b62413f-9705-4f4a-a8f0-7c7e25df0ad9.png)
(1)求证:
;
(2)填空
①若
,则
的长为 ;
②当
的度数为 时,四边形
为菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1412d0a9085502d24afa2b13f3aa4c.png)
![](https://img.xkw.com/dksih/QBM/2020/7/21/2510565696339968/2510897542881280/STEM/6b62413f-9705-4f4a-a8f0-7c7e25df0ad9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbc0e76b7abb656327bdc97226713e1.png)
(2)填空
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3766aa0e81e5f3c52e76e7b231dca024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3827554ef88bce8ae0e3755b07443080.png)
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【推荐1】如图1,AB是⊙O的直径,E是AB延长线上一点,EC切⊙O于点C,
交AC于点P,交EC的延长线于点D.
(1)求证:
是等腰三角形;
(2)
于H点,交⊙O于G点,过B点作
,交⊙O于点F,交CG于Q点,连接AF,如图2,若
,
,求AF的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ea8ad84616d1537a8a16d2533269eb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f4eb640505099730001c4cbe65c3cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d1d83a8219698969f956b2385e1a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc12eff1ddc83f80208a57f5e8fe1219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976836d2271c31a8f701f7e98ab624e.png)
![](https://img.xkw.com/dksih/QBM/2016/9/13/1574237524058112/1574237530374144/STEM/5525cdd7-7434-4298-a536-0e6eca45d828.png?resizew=373)
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【推荐2】已知:如图1,
中,
,
,动点
从点
出发沿线段
以
的速度向点
运动,同时动点
从点
出发沿线段
以
的速度向点
运动,当其中一个动点停止运动时另一个动点也随之停止,设运动时间为
(单位:
)以点
为圆心,
长为半径的圆
与射线
,线段
分别交于点
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720380855222272/2726408440602624/STEM/4aa7c483-4d39-4b13-890f-9e426afab402.png)
(1)当
是等腰三角形时,求
的值;
(2)设
,求
与
的函数解析式,且写出
的取值范围;
(3)如图2,连接
,当
为何值时,线段
与⊙
相切?
(4)如图2,若⊙
与线段
只有一个公共点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011586f46c6f0c37d0f2e85fb69bb4c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9d0d90bf492735a174a88df5704f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65502a7ea4d1ce6d6d8c720845c73e0.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720380855222272/2726408440602624/STEM/4aa7c483-4d39-4b13-890f-9e426afab402.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e83115ca0edf2fedb181bb960f3efde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(4)如图2,若⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解题方法
【推荐1】如图,AB是⊙O的切线,切点为B,OA交⊙O于点C,∠AOB的平分线交AB于点D,连结CD.
(1)求证:CD是⊙O的切线;
(2)若AD=2BD,CD=2,求
、线段AB及线段AC围成的阴影部分的面积.
(1)求证:CD是⊙O的切线;
(2)若AD=2BD,CD=2,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe6ad3e9bcbea2cfe382c3e74628286.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/da128174-00d0-45e3-9bfe-4249c0fa324d.png?resizew=162)
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【推荐2】问题提出
(1)如图1,
的半径为
,弦
,
是弦
所对的优弧
上的一个动点,求图中阴影部分的面积之和的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/8414b96c-fbf1-4172-9f8a-e8fbaf1c9169.png?resizew=142)
问题解决
(2)如图2,这是某市的一个面积为
的圆形宾馆示意图.点
为圆心,宾馆设计图纸中有一个四边形区域
,连接
,其中等边
为接待区域,
为休息区域,当点
在
的什么位置上时,四边形区域
的面积最大?并求出最大值.
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff65ab4ec507ada90acb8755fbd189c8.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/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/8414b96c-fbf1-4172-9f8a-e8fbaf1c9169.png?resizew=142)
问题解决
(2)如图2,这是某市的一个面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565073e1f31f6a4511bf166601f73d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd38e0d42026b953b2fd2ad3634ecb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/6531e909-d0b5-4998-93e5-8a3e0de43626.png?resizew=146)
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【推荐1】如图,矩形ABCD中,P是边AD上的一动点,连接BP、CP,过点B作射线交线段CP的延长线于点E,交AD边于点M,且使得∠ABE=∠CBP,如果AB=2,BC=5,AP=x,PM=y.
![](https://img.xkw.com/dksih/QBM/2015/7/6/1573863666147328/1573863672012800/STEM/3845b150e03f4c6ca39cfcd8dea8115d.png?resizew=187)
(1)说明△ABM∽△APB;并求出y关于x的函数关系式,写出自变量x的取值范围;
(2)当AP=4时,求sin∠EBP的值;
(3)如果△EBC是以∠EBC为底角的等腰三角形,求AP的长.
![](https://img.xkw.com/dksih/QBM/2015/7/6/1573863666147328/1573863672012800/STEM/3845b150e03f4c6ca39cfcd8dea8115d.png?resizew=187)
(1)说明△ABM∽△APB;并求出y关于x的函数关系式,写出自变量x的取值范围;
(2)当AP=4时,求sin∠EBP的值;
(3)如果△EBC是以∠EBC为底角的等腰三角形,求AP的长.
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【推荐2】阅读与思考
请仔细阅读材料,并完成相应的任务.
好学善思的小明和小亮在九年级北师大上册数学课本上看到这样一道题:
习题1.2
2.已知:如图1,在菱形
中,对角线
与
相交于点
,
,
,
,
分别是
,
,
,
的中点.求证:四边形
是菱形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/665a2041-1f54-49ba-9a8c-8cc87747cf1f.png?resizew=194)
小明经过思考,发现该题用课本上的3个菱形的判定定理都可以证明,他很快给出了其中一种证明过程:
证明:
四边形
是菱形,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
,
,
,
分别是
,
,
,
的中点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
,
,
四边形
是平行四边形.
.
四边形
是菱形(依据).
小亮在课外书上发现了这道题的拓展题;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/c9fcac47-93b0-483b-a2ae-bd5504767829.png?resizew=216)
如图2,在菱形
中,
,
是其内部任意一点,
连接
,
,
,
,四边形
的顶点
,
,
,
分别在
,
,
,
上.
,
.且
,若
与
的面积和为
,则菱形
的周长为______.
小亮想了一会,没有什么思路……
任务:
(1)小明证明过程中的“依据”是______.
(2)请用另一种菱形的判定定理证明图1中的四边形
是菱形(写出一种即可).
(3)请你帮小亮解决这个问题,菱形
的周长为______.
请仔细阅读材料,并完成相应的任务.
好学善思的小明和小亮在九年级北师大上册数学课本上看到这样一道题:
习题1.2
2.已知:如图1,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/665a2041-1f54-49ba-9a8c-8cc87747cf1f.png?resizew=194)
小明经过思考,发现该题用课本上的3个菱形的判定定理都可以证明,他很快给出了其中一种证明过程:
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a23f35ebcd9799d82c1e41c09781a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0866e1551b61074ca8e61261ecd1f9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25046e366e62da8e9e8ee40b0c385b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae843cad075fc73e09fd77aa5a1d9827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490f3a8c1701d4cba2a0d02a0f892287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
小亮在课外书上发现了这道题的拓展题;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/c9fcac47-93b0-483b-a2ae-bd5504767829.png?resizew=216)
如图2,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb3adb7531d47e474b961a9e560ea85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405b67fba22f84c40cc639beea32ef1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe3133bc5c249ec1427a2107a6d3b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15da2cded2282b8fa995758e7242d954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca90252efb03874710e2bfbeaab89ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
小亮想了一会,没有什么思路……
任务:
(1)小明证明过程中的“依据”是______.
(2)请用另一种菱形的判定定理证明图1中的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(3)请你帮小亮解决这个问题,菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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