【特例感知】
(1)如图①,
和
是等腰直角三角形,
,点
在
上,点
在
的延长线上,连接
,
,写出图中一对你认为全等的三角形_________;
【类比迁移】
(2)如图②,将图1中的
绕着点
顺时针旋转
,那么第(1)问的结论是否仍然成立?如果成立,证明你的结论;如果不成立,说明理由.
【方法运用】
(3)如图③,若
,点
是线段
外一动点,
,连接
.若将
绕点
顺时针旋转
得到
,连接
,
是否有最小值,若有请求出最小值;若没有,请说明理由.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d3c378b1118d331d30b63fc587b270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
【类比迁移】
(2)如图②,将图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b57925b2b7df250255e3ab571580468.png)
【方法运用】
(3)如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.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/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/d2f17458-7be9-4324-a8c8-d6bb515abc52.png?resizew=493)
更新时间:2024-04-08 17:04:07
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图1,点M为直线AB上一动点,△PAB,△PMN都是等边三角形,连接BN,
(1)M点如图1的位置时,如果AM=5,求BN的长;
(2)M点在如图2位置时,线段AB、BM、BN三者之间的数量关系__________________;
(3)M点在如图3位置时,当BM=AB时,证明:MN⊥AB.
(1)M点如图1的位置时,如果AM=5,求BN的长;
(2)M点在如图2位置时,线段AB、BM、BN三者之间的数量关系__________________;
(3)M点在如图3位置时,当BM=AB时,证明:MN⊥AB.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/27/b0f8d20c-52dd-496c-a32a-ca2cc7c8cd08.png?resizew=441)
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解答题-作图题
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适中
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【推荐2】如图,
为等边三角形,点D为BC延长线上的一点,射线CM平分∠ACD,E是CM上一点,且CE=BD,连接AD、AE、DE .
![](https://img.xkw.com/dksih/QBM/2020/11/9/2589159312367616/2594843134754816/STEM/5899881f09d64aaf8a4a233944268681.png?resizew=183)
(1)根据描述补全图形(角平分线无需尺规作图)
(2)试判断
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2020/11/9/2589159312367616/2594843134754816/STEM/5899881f09d64aaf8a4a233944268681.png?resizew=183)
(1)根据描述补全图形(角平分线无需尺规作图)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
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解答题-问答题
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适中
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【推荐1】如图,矩形
放置在平面直角坐标系中,
为坐标原点,点
在
轴上,点
在
轴上,
,
,过点
的直线交矩形
的边
于点
,且点
不与点
,
重合,过点
作射线
交
轴于点
,交
轴于点
,使得
.
为等腰直角三角形,求点
的坐标.
(2)如图②,过点
作
交
轴于点
,连接
,
.若四边形
是平行四边形,求
的坐标.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2d3f02cb9007cd4a90ea30f6dd8181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bdcc2742be52cc80ba7dbe79f9a574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](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/dad2a36927223bd70f426ba06aea4b45.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c586719b7790641696b772c47293a361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)如图②,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de4d8e6f9f4256819f114a010d6b933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b026be945860f5948066526c9420b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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解答题-证明题
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名校
【推荐2】如图,已知
,延长
到
,使得
,若
,连接
、
,
交
于点
.
是矩形;
(2)连接
,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4640c5def08c0d49a6d378b12f43ec3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15416b74b2ecbcfa38cf34a9ffff730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfe2a58326612fcabd34fd4402a66ee.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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解答题-问答题
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适中
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【推荐1】已知,如图,Rt△ABC 中,∠ACB=90°,BC=8,AC=6,点 D 在边 BC 上(不 与点 B、C 重合),点 E 在边 BC 的延长线上,∠DAE=∠BAC,点 F 在线段 AE 上,∠ACF=∠B.设 BD=x.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/4de77bc4-17cd-43a3-9ad8-8890568f12cc.png?resizew=366)
(1)若点 F 恰好是 AE 的中点,求线段 BD 的长;
(2)若 y=
,求 y 关于 x 的函数关系式,并写出它的定义域;
(3)当△ADE 是以 AD 为腰的等腰三角形时,求线段 BD 的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/4de77bc4-17cd-43a3-9ad8-8890568f12cc.png?resizew=366)
(1)若点 F 恰好是 AE 的中点,求线段 BD 的长;
(2)若 y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ec395fe7a4bc51dac28c37085fabcf.png)
(3)当△ADE 是以 AD 为腰的等腰三角形时,求线段 BD 的长.
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解答题-证明题
|
适中
(0.65)
【推荐2】已知:如图,在四边形
中,
,对角线
、
交于点
,点
在边
上,连接
交线段
于点
,
.
![](https://img.xkw.com/dksih/QBM/2018/12/24/2103705406799872/2105111941160960/STEM/8705601d210140fd937513ee95713e96.png?resizew=129)
(1)求证:
;
(2)连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c8c3e00992599c5a7f93ef9c834686.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469daeb7983dbb2a14536b5906c1900f.png)
![](https://img.xkw.com/dksih/QBM/2018/12/24/2103705406799872/2105111941160960/STEM/8705601d210140fd937513ee95713e96.png?resizew=129)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a20e167442331cc828fd85dda786fd.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1403ee9ea65eeee04476d2fadb7a859c.png)
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