如图,在
中,
,点P在
边上,过点P作
于点Q,O为
边的中点,连接
并延长到点M,使
,连接
.
(1)填空:如图1,当
时,
=__________.
(2)如图2,当
时,将
绕点A逆时针方向旋转,连接
,线段
之间的数量关系如何?请就图2所示情况证明.
(3)在(2)的条件下,在
中,若
,将
由初始位置绕点A逆时针方向旋转β角
,当点Q到直线
的距离为4时,请直接写出线段
的值__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f304a716fd35979027a74d23196f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b154270249b0ef54ddb26137b2681a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a187f0d36def464baefc8919ce24c20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/eaec82a1-e0ae-4fcd-bbc2-ba0f34ba5c2c.png?resizew=450)
(1)填空:如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1499f4700441a5f42611c87c54a98b.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fcecba970df17b149e0bd32c0b78d2e.png)
(3)在(2)的条件下,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf4ae1eb757d8dd0997db346518e07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6397b8d0a25df43d4e60b29a3b90c12e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
更新时间:2023-12-09 20:57:48
|
相似题推荐
解答题-作图题
|
较难
(0.4)
【推荐1】如图1,点O为正方形ABCD的中心.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/2c66438d-10bb-4126-93c0-588fa6c287d0.png?resizew=346)
(1)将线段OE绕点O逆时针方向旋转90°,点E的对应点为点F,连结EF,AE,BF,请依题意补全图1;
(2)根据图1中补全的图形,猜想并证明AE与BF的关系;
(3)如图2,点G是OA中点,
是等腰直角三角形,H是EF的中点,
,
,
,
绕G点逆时针方向旋转
角度,请直接写出旋转过程中BH的最大值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/2c66438d-10bb-4126-93c0-588fa6c287d0.png?resizew=346)
(1)将线段OE绕点O逆时针方向旋转90°,点E的对应点为点F,连结EF,AE,BF,请依题意补全图1;
(2)根据图1中补全的图形,猜想并证明AE与BF的关系;
(3)如图2,点G是OA中点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b103d3b19a5104e69ab3f6ab4e8d53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04817cf2cba43ebe082c2014113d44b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746bd14f240b382ddf0214f69d89ddbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b103d3b19a5104e69ab3f6ab4e8d53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】
的边
在直线l上,
,且
,
的边
也在直线l上,边
与边
重合,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/8a059660-7ed2-4ccc-9df0-7107a1c95ab6.png?resizew=544)
(1)如图1,直接写出
与
的数量关系:______,
与
的位置关系:______;
(2)将
沿直线l向左平移到图2的位置时,
交
于点O,交
于点Q,连接
,
,求证:
;
(3)将
沿直线l向左平移到图3的位置时,
的延长线交
的延长线于点Q,连接
,
,试探究
与
满足的数量关系,并说明理由;
(4)若
,
,点P在
的延长线上继续向左平移,当
时,请直接写出
与
的面积之比.
![](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/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4cd7c59e65d066440205914db41f60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996921128e41ae0449bd0ba22b08a219.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/8a059660-7ed2-4ccc-9df0-7107a1c95ab6.png?resizew=544)
(1)如图1,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8a8f63088245653535d5d23d6f26a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054f4625f8e991371c8e1b55034127f5.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8a8f63088245653535d5d23d6f26a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95108f5aa7f7ed0f6e556fb50cdbae98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d9f2bee4f93e23c07e0aaeecf02f43.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892d137b39397b8f5cc109ff074fea0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c2451aa9462aa2c93252189e2f24f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a228f59faf3fd8dc54ef4c49218541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0719ae600f0efeeaba659bb54e2edc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166c46d68d567af5cc92d33a1540b687.png)
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解答题-问答题
|
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(0.4)
解题方法
【推荐3】(1)如图1,在△OAB和△OCD中,OA=OB,OC=OD,∠AOB=∠COD=50°,连接AC,BD
交于点M.
①
的值为 ;②∠AMB的度数为 °;
(2)如图2,在△OAB和△OCD中,∠AOB=∠COD=90°,∠OAB=∠OCD=30°,连接AC交BD的延长线于点M.求
的值及∠AMB的度数;
(3)在(2)的条件下,将△OCD绕点O在平面内旋转,AC,BD所在直线交于点M.若OD=
,OB=
,请直接写出当点C与点M重合时AC的长.
交于点M.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c0fed1bec279a67db01c918711d4f5.png)
(2)如图2,在△OAB和△OCD中,∠AOB=∠COD=90°,∠OAB=∠OCD=30°,连接AC交BD的延长线于点M.求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c0fed1bec279a67db01c918711d4f5.png)
(3)在(2)的条件下,将△OCD绕点O在平面内旋转,AC,BD所在直线交于点M.若OD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce0249a3ff99c083fa4421877549db1.png)
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444245362245632/2444905679495168/STEM/5281aba9adc44470a08a5e852797b333.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444245362245632/2444905679495168/STEM/a6ac578c224b409b89d520f47f9ff334.png?resizew=150)
![](https://img.xkw.com/dksih/QBM/2020/4/18/2444245362245632/2444905679495168/STEM/64d1dc665b214f4bb43f32f9e3742c4d.png?resizew=132)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图,平面直角坐标系中,把矩形
沿对角线
所在的直线折叠,点A落在点D处,
与
交于点E.
的长满足式子
.
(2)求出点E的坐标和直线
的函数解析式;
(3)F是x轴上一点,在坐标平面内是否存在点P,使以O,B,P,F为顶点的四边形为菱形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ae1d6c499236dd23f7c78e5f78d1cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87fc176c145d132c7362a9c0781d83a.png)
(2)求出点E的坐标和直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)F是x轴上一点,在坐标平面内是否存在点P,使以O,B,P,F为顶点的四边形为菱形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】在等边
中,点
在边
上,点
在边
上,将线段
绕点
逆时针旋转
得到线段
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/1ef3bb0f-42d8-4dfc-b3f3-3c49954de5ae.png?resizew=473)
(1)如图1,
是
的中点,点
与点
重合,连接
,若
,求
的长;
(2)如图2,点
在边
上,且
,猜想
与
的关系,并证明你的结论;
(3)如图3,
,
,连接
,过点
作
的垂线交
于点
,连接
,
,将
沿着
翻折得到
,连接
.当
的周长最小时,直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/1ef3bb0f-42d8-4dfc-b3f3-3c49954de5ae.png?resizew=473)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501e275e1663c5173f3d73cc7b13461a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4b798f9bb5482f0a3cfa1bfd77d245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7f9f7952c4be18cb73393047c2ad75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f02ed682ee981bfa4aeb2de96771be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350e954f629c1901a5cec03558319e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87b2f781cafa7989d81f9bf8c42b150.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】矩形AOCD绕顶点A(0,5)逆时针方向旋转,当旋转到如图所示的位置时,边BE交边CD于M,且ME=2,CM=4.
(1)求AD的长;
(2)求经过A、B、D三点的抛物线的解析式;
(3)在直线AM下方,(2)中的抛物线上是否存在点P,使S△PAM =
?若存在,求出P点坐标;若不存在,请说明理由.
(1)求AD的长;
(2)求经过A、B、D三点的抛物线的解析式;
(3)在直线AM下方,(2)中的抛物线上是否存在点P,使S△PAM =
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b77a750c8b127476bbb41e1eb289750.png)
![](https://img.xkw.com/dksih/QBM/2018/3/1/1892858021609472/1895087349678080/STEM/514f632f95e0484ebd3a0737dd02aa23.png?resizew=499)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
真题
【推荐2】如图,AB是⊙O的直径,点C是
的中点,⊙O的切线BD交AC的延长线于点D,E是OB的中点,CE的延长线交切线BD于点F,AF交⊙O于点H,连接BH.
![](https://img.xkw.com/dksih/QBM/2015/9/1/1573909341347840/1573909347467264/STEM/7cb8ae237f6a4dd6b7419e959b16f97d.png)
(1)求证:AC=CD;
(2)若OC=
,求BH的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8078e96d99cf4f2dd12cb58d22e1b0.png)
![](https://img.xkw.com/dksih/QBM/2015/9/1/1573909341347840/1573909347467264/STEM/7cb8ae237f6a4dd6b7419e959b16f97d.png)
(1)求证:AC=CD;
(2)若OC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
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解答题-问答题
|
较难
(0.4)
解题方法
【推荐3】如图,二次函数
的图象与
轴交于
、
两点(
在
的左侧),交
轴于点
,点
的坐标
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/28/2730629509898240/2730761015369728/STEM/288abab5-da8e-486d-b007-e63dd677d57e.png?resizew=401)
(1)求二次函数的解析式;
(2)点
是线段
上的一个动点(不与点
、点
重合),过点
作
交
轴于点
,点
是抛物线的对称轴与线段
的交点,连接
、
.设
的长为
,
的面积为
.求
与
之间的函数关系式,并求出当
最大时,点
的坐标;
(3)在(2)条件下,连接
,把
绕点
沿逆时针方向旋转一定的角度
,得到
,其中边
交坐标轴于点
.在旋转过程中,是否存在一点
,使得
?若存在,请直接写出所有满足条件的点
的坐标;若不存在,请说明理.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://img.xkw.com/dksih/QBM/2021/5/28/2730629509898240/2730761015369728/STEM/288abab5-da8e-486d-b007-e63dd677d57e.png?resizew=401)
(1)求二次函数的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e210c9698063925ad2df6b6c1749571.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f944f78358763be992bb3d55fff12f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)在(2)条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c54ce139ae5d63691cac8a1ce5bbfe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262ce01d5c912ebcc0622f47b4bd674a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284750727aa2c32b2477d126daefb329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94946d0682774ec668220f43a959393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
解题方法
【推荐1】如图,已知在直角
中,
,
为
边上一点,连接
,过
作
,交
边于点
,
(1)如图1,若
,
,
,求
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/2d281064-0d68-4772-86db-a3f88af6fd60.png?resizew=188)
图1
(2)如图2,作
的角平分线交
于点
,连接
,若
,求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/5584595f-ad51-4bc9-b3ab-fdd0c4957027.png?resizew=181)
图2
(3)如图3,在(1)的条件下,
为
边的中点,
为
边上一个动点,连接
,将
沿
翻折,得到
,连接
,以
为斜边向右作等腰直角三角形
,连接
,求
的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/13a714f6-2773-4211-8ac0-dad4a462798a.png?resizew=199)
图3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b84c9d873289f99d8eb733d12899280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ae36029429324563cd707fcef0bdd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ef019685cfdde5bb909ff65f80875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab11d19f5be652857e641695792a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e279445eb4a82e4d7d3b1931e7bb2f62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/2d281064-0d68-4772-86db-a3f88af6fd60.png?resizew=188)
图1
(2)如图2,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.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/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e543967ad7bd02e3bd7196c19d46f1d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d814a3bbafc5a442e076d0ca1e9113ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/5584595f-ad51-4bc9-b3ab-fdd0c4957027.png?resizew=181)
图2
(3)如图3,在(1)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c015d99f2677951bdcd0447240ef93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b388b87b1dca3a2f9e7c2114d2c8b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c015d99f2677951bdcd0447240ef93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a83376c9b6c33e05fbdeb2cb776d00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a21897349d3d7c94419692106887153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a21897349d3d7c94419692106887153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da092a6b13feebdecdbfc7a1f6c8ff98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/13a714f6-2773-4211-8ac0-dad4a462798a.png?resizew=199)
图3
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解答题-证明题
|
较难
(0.4)
【推荐2】如图,在△ABC中,点D为BC上一点,过A,B,D三点作⊙O,AE是⊙O的直径,AC是⊙O的切线,AD=DC,连接DE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/7216d0dd-88e8-4c8a-8248-15fad6b5f976.png?resizew=124)
(1)求证:AB=AC;
(2)若
,AC=
,求△ADE的周长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/7216d0dd-88e8-4c8a-8248-15fad6b5f976.png?resizew=124)
(1)求证:AB=AC;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152d9502da876fa5499f251b3684f577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
您最近一年使用:0次