如图1,在正方形
中,
、
分别在
上,连接
,过点
作
于点
,交
于点
、且点
为线段
的中点.
,求
.
②求证:
;
(2)如图2,若点
在正方形
内,点
在正方形外,且
,其余条件不变,则
还成立吗?说明理由.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e5141e0c913ff7ea7787d48f7c1d984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b7672143546c165b341d76f70e8da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1876839631d0df8e87dbafc8bdb42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bbc69ac79fc430b38aa2f6a2bc3092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
(2)如图2,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a73e13066f5ab14b07a1588d968578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
更新时间:2024-05-16 13:11:31
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】已知,
中,
,点
是
的边
上的点,且
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/e8faad2a-39bb-4118-8296-dc4b5d0fe445.png?resizew=426)
(1)如图1,若
,求证:
.
(2)如图2,
与
不平行,连接
,交
于点
.若
恰好垂直平分
,且
.请先找出图中所有与
相等的线段(不需另填字母),再进行证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a651eb577dbada1f29590e558d6f9fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/e8faad2a-39bb-4118-8296-dc4b5d0fe445.png?resizew=426)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1ac3ab8d3ce5e61fd2f89761f80976.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac3d3b55561ec5d4acc242ecd1c7f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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名校
【推荐2】正方形
中,对角线AC,BD相交于点
、点
为直线
上一点、连接
、绕点
将射线
逆时针旋转
交直线
于点
.
问题提出:(1)如图1.当点
在线段
上时,线段
与
的数量关系为 ,线段BE,BF,BD之间的数量关系为 .
![](https://img.xkw.com/dksih/QBM/2020/7/8/2501629281615872/2503416461615104/STEM/29954441-0396-481e-9a2d-fd8275d58eb0.png)
深入探究:(2)如图2,当点
在
延长线上时,(1)的结论是否成立?请说明理由.
![](https://img.xkw.com/dksih/QBM/2020/7/8/2501629281615872/2503416461615104/STEM/e5c54d94-f847-476f-accb-ece85ae5e4de.png)
拓展延伸:(3)当
时,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/1dde8112e8eb968fd042418dd632759e.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/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0468237bbc0d3df77435d98b817c10c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
问题提出:(1)如图1.当点
![](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/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://img.xkw.com/dksih/QBM/2020/7/8/2501629281615872/2503416461615104/STEM/29954441-0396-481e-9a2d-fd8275d58eb0.png)
深入探究:(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://img.xkw.com/dksih/QBM/2020/7/8/2501629281615872/2503416461615104/STEM/e5c54d94-f847-476f-accb-ece85ae5e4de.png)
拓展延伸:(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a1332cc5f6471fc13d03caa7ae90d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/2020/7/8/2501629281615872/2503416461615104/STEM/c6e57c35-f00e-4904-b976-21d71871483b.png)
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解答题-问答题
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(0.4)
【推荐1】已知正方形
,E,F为平面内两点.
【问题发现】
(1)如图1,当点E在
边上时,作
,交
的延长线于点F.连接
,则
与
的数量关系是________;
【类比探究】
(2)如图2,当点E在正方形
外部时,作
,交
的延长线于点F.当
时,猜想线段
,
,
之间的数量关系,并说明理由;
【解决问题】
(3)如图3,当点E在正方形
外部时,作
于E,作
,
,且D,E,F三点共线,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
【问题发现】
(1)如图1,当点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175c239742c7ba8fd67a6d5f99cb1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
【类比探究】
(2)如图2,当点E在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175c239742c7ba8fd67a6d5f99cb1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce726bceb02452bb4e5ed6b00fa94e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
【解决问题】
(3)如图3,当点E在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113ac6e656002f2d110f08ed753e9e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5322a78b02c2bc387ea7dce3e9461974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d6b9ccc3a025e4f11717cfd7ab354b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeb94acdc3de00655e6e29d5372da09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338c6c83ab4abc895ac36ab888a55be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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较难
(0.4)
【推荐2】已知
与
都为等腰三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/43955b6e-806a-45bf-a1c3-b453ade4425f.png?resizew=485)
(1)当
时.
①如图1,当点D在
上时,
与
的数量关系是______;
②如图2,当点D不在
上时,
与
的数量关系是______.
(2)如图3(点B位于
的内部),当
时.
①探究线段
与
数量关系,并说明理由;
②当
,
,
时,请直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c50ed3533d5274047cac354bf4e1fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8514e57b27847632d3c7756f2bf7fb0b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/43955b6e-806a-45bf-a1c3-b453ade4425f.png?resizew=485)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68751936ae6fc396c4c87f15437164c.png)
①如图1,当点D在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
②如图2,当点D不在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)如图3(点B位于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5787c9fb357df5ddf7ebac3b9f2a0d3c.png)
①探究线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefaa03a2be71c9fc509b5b309d1c6ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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【推荐1】如图(1),CD、BE是△ABC的两条高,M为线段BC的中点.
(1)求证:MD=ME.
(2)若∠ABC=70°,∠ACB=42°,求∠DME的度数.
(3)若将锐角△ABC变为钝角△ABC,如图(2),∠BAC=α,请直接写出∠DME的度数.(用含α的式子表示)
(1)求证:MD=ME.
(2)若∠ABC=70°,∠ACB=42°,求∠DME的度数.
(3)若将锐角△ABC变为钝角△ABC,如图(2),∠BAC=α,请直接写出∠DME的度数.(用含α的式子表示)
![](https://img.xkw.com/dksih/QBM/2021/11/23/2857263324585984/2858158455087104/STEM/06b967e72aac4cfe904a95d606c0102d.png?resizew=412)
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【推荐2】在△ABC和△ADE中AC=BC,AE=DE , ∠ACB=∠AED=90° , 点E在AB上,F是线段BD的中点,连接CE、FE.
(1)若AD=3
,BE=4 ,求EF的长
(2)求证:CE=
EF
(3)将图1中的△ADE绕点A顺时针旋转,使△AED的一边AE恰好与△ABC的边AC在同一条直线上(如图2),连接BD,取BD的中点F,问(2)中的结论是否仍然成立,并说明理由.
(1)若AD=3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(2)求证:CE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(3)将图1中的△ADE绕点A顺时针旋转,使△AED的一边AE恰好与△ABC的边AC在同一条直线上(如图2),连接BD,取BD的中点F,问(2)中的结论是否仍然成立,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/8d2aab34-6e3a-4d27-bfb9-1475a77f3f01.png?resizew=348)
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解答题-作图题
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较难
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【推荐1】如图,在正方形ABCD中,
,P是CD边上一动点(不与点D重合),连接AP,点D与点E关于AP所在的直线对称,连接AE,PE,延长CB到点F,使得
,连接EF,AF.
![](https://img.xkw.com/dksih/QBM/2022/3/28/2946017783906304/2959652955217920/STEM/a52a90de-3965-472d-969c-8280d70cf4c7.png?resizew=271)
(1)依题意补全图1;
(2)若
,求线段EF的长;
(3)当点P在CD边上运动时,能使
为等腰三角形,直接写出此时
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fae2bb5fee167aa78a5052a68016c29.png)
![](https://img.xkw.com/dksih/QBM/2022/3/28/2946017783906304/2959652955217920/STEM/a52a90de-3965-472d-969c-8280d70cf4c7.png?resizew=271)
(1)依题意补全图1;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4fdb5421b7ccd0b89dd3943e5809765.png)
(3)当点P在CD边上运动时,能使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d833a8e953d0d3a48a46d2b3aec89147.png)
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【推荐2】综合与探究
问题情境:
如图,正方形ABCD的边长为12,点E在BC边上运动.
![](https://img.xkw.com/dksih/QBM/2022/1/6/2894277515886592/2952099836968960/STEM/0e4c66e1-0c7b-4515-a65d-ab4da0e2b5da.png?resizew=564)
探究发现:
(1)如图1,当
时,连接AE,过点B作
于点G,交CD于点F,请直接写出线段BG和BF的长度;
(2)如图2,以BE为边作正方形BEFG,并把正方形BEFG绕点B逆时针旋转,连接AG和DF,发现DF与AG之间存在数量关系,请写出它们的数量关系并证明.
探究拓广:
(3)如图3,点E运动到与点C重合,连接AC,在AB上取点F,使
,以CF为边作正方形CFMN,连接AM,在图3中补全图形并直接写出AM的长.
问题情境:
如图,正方形ABCD的边长为12,点E在BC边上运动.
![](https://img.xkw.com/dksih/QBM/2022/1/6/2894277515886592/2952099836968960/STEM/0e4c66e1-0c7b-4515-a65d-ab4da0e2b5da.png?resizew=564)
探究发现:
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
(2)如图2,以BE为边作正方形BEFG,并把正方形BEFG绕点B逆时针旋转,连接AG和DF,发现DF与AG之间存在数量关系,请写出它们的数量关系并证明.
探究拓广:
(3)如图3,点E运动到与点C重合,连接AC,在AB上取点F,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21fe7f306533f388843ff62fa2b5251a.png)
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解答题-问答题
|
较难
(0.4)
【推荐3】综合与实践课上,老师让同学们以“图形的变换”为主题开展数学活动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/ae8701f5-1cc3-4a98-8d7d-2ce3a7fab6f5.png?resizew=615)
(1)操作判断
如图1,将矩形纸片
折叠,使
落在边
上,点
与点
重合,折痕为
,即可得到正方形
,沿
剪开,将正方形
折叠使边
,
都落在正方形的对角线
上,折痕为
,
,连接
,如图2.根据以上操作,则
____________
.
(2)迁移探究
将图2中的
绕点
按顺时针旋转,使它的两边分别交边
,
于点
,
,连接
,如图3.探究线段
,
,
之间的数量关系,并说明理由.
(3)拓展应用
连接正方形对角线
,若图3中的
的边
,
分别交对角线
于点
,
,将正方形纸片沿对角线
剪开,如图4,若
,
,请直接写出
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/ae8701f5-1cc3-4a98-8d7d-2ce3a7fab6f5.png?resizew=615)
(1)操作判断
如图1,将矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74465e560f3cd0bf656131020eb205d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a02295b56d4f94521133b91e1403e4.png)
(2)迁移探究
将图2中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936af8bf3f3ed7a2d40e1211860fc347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67716ac738ee2911a69bf4063110a5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71432131d194730a67f3192d1f8679b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9020059d62af7498039f091de6f005ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71432131d194730a67f3192d1f8679b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e89bcda280422e4adae1ea85678dc6.png)
(3)拓展应用
连接正方形对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d2d4aa39abfb9bf99ec7ffd6a1dbe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42774a918f52ac8aa8b1f5b78a676f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78442aba4de44c5d4759fb23e294fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80370d6e9601837daaa7d92a06da704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c94f911645182a3a16ef7b155627584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c6163af13c0277bc633fc9b4a83700.png)
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