如图,
是等腰直角三角形.
,点
为
的中点,
与
相切于点
,连接
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/5a312639-b20c-4064-993e-90c1ec3cfffb.png?resizew=132)
(1)判断
所在直线与
的位置关系,并说明理由.
(2)若
的半径为2,求
的长.(结果保留
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/0b3791f7eb4d33d52bf7a73c1b3e75f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/5a312639-b20c-4064-993e-90c1ec3cfffb.png?resizew=132)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
更新时间:2024-01-10 21:28:47
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,△ABC中,
交AC于P,∠ACB,∠ACD的平分线分别交MN于E、F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/f275f1b2-711f-471a-a7bb-d6606893e55c.png?resizew=207)
(1)求证:
;
(2)当MN与AC的交点P在AC的什么位置时,四边形AECF是矩形,说明理由;
(3)当△ABC满足什么条件时,四边形AECF是正方形.(不需要证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07d7a3d7f32ce2b4baa1f9346dc7e3f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/f275f1b2-711f-471a-a7bb-d6606893e55c.png?resizew=207)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b30155e0e3cf7c5146d3311e5b8da93.png)
(2)当MN与AC的交点P在AC的什么位置时,四边形AECF是矩形,说明理由;
(3)当△ABC满足什么条件时,四边形AECF是正方形.(不需要证明)
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解答题-证明题
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适中
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【推荐2】如图,△ABC中,AB=AC,∠B的平分线交AC于D,E是BD延长线上的一点,且AE=AC.
![](https://img.xkw.com/dksih/QBM/2020/11/20/2596915735625728/2598679161995264/STEM/22967ed2bc4b467f91ac4b7ba832bd59.png?resizew=145)
(1)求证:AE//BC;
(2)若AD=DC=2,求BC的长.
![](https://img.xkw.com/dksih/QBM/2020/11/20/2596915735625728/2598679161995264/STEM/22967ed2bc4b467f91ac4b7ba832bd59.png?resizew=145)
(1)求证:AE//BC;
(2)若AD=DC=2,求BC的长.
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解答题-证明题
|
适中
(0.65)
【推荐3】已知
,
平分
.
(1)如图1将三角尺的直角顶点落在
的任意一点P上,现探究
、
的大小关系:
①特例探究:当三角尺的两条直角边分别与
、
垂直,垂足为E、F时,依据学过的定理: (写出定理文字表述的具体内容),得到
;
②一般探究:当三角尺的两条直角边分别交
、
于点E、F时,试判断:
(填“
”、“
”或“
”);
(2)如图2,点P是
内一点,E、F分别在边
、
上,
,
.求证:点P在
上;
(3)在(2)的条件下,建立如图3所示的平面直角坐标系,已知
是第一象限的角平分线,若点P的坐标为
.
①求点P的坐标;
②过点P作
交x轴于点G,交y轴于点H,当点E从点H运动到点O时,则
的中点Q运动所形成的路径长为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/2386fc0b-c43a-4023-8ed7-016ef6af338a.png?resizew=605)
(1)如图1将三角尺的直角顶点落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3137705cb4170baafa66ff46eefb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca1d09859dfab140e55e3cc3e7d67d5.png)
①特例探究:当三角尺的两条直角边分别与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b30155e0e3cf7c5146d3311e5b8da93.png)
②一般探究:当三角尺的两条直角边分别交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3137705cb4170baafa66ff46eefb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca1d09859dfab140e55e3cc3e7d67d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
(2)如图2,点P是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fd792376c623d8299f554b46486f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b30155e0e3cf7c5146d3311e5b8da93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
(3)在(2)的条件下,建立如图3所示的平面直角坐标系,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf6283b6a7cf5a3177661c17d852b72.png)
①求点P的坐标;
②过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90cecdcdd6bd5d6d0c9ca1d121dbf449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知直线
与
相离,
于点
,
与
相交于点
,
与
相切于点
的延长线交直线
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b6415700-b6da-48de-8108-d9b5f02899ac.png?resizew=349)
(1)请证明:
;
(2)若
,求
的半径和线段
的长;
(3)若在
上存在点
,使
是以
为底边的等腰三角形,请直接写出
的半径
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add5a0c3d79985e90d92c17a11373fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d4b93cd713d057b7c6e5ecfd97d6d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/060cb91284e298ca98d90472e1c3d5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b6415700-b6da-48de-8108-d9b5f02899ac.png?resizew=349)
(1)请证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6914d401b0e7099dbea8ebdd5052ee7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(3)若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82bc4b926b29e58400df99ebf5771404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,正方形ABCD的对角线相交于点O,以AD为边向外作Rt△ADE,∠AED=90°,连接OE.
![](https://img.xkw.com/dksih/QBM/2017/10/19/1798691471114240/1799341587546112/STEM/3ac5f35df13b49ada0bcf886f08fd247.png?resizew=132)
(1)将△AOE绕点O顺时针旋转90°,得△A'OE'.
①画出△A'OE';②判断点E'是否在直线ED上,并说明理由;
(2)若DE=4,OE=
,求AE的长.
![](https://img.xkw.com/dksih/QBM/2017/10/19/1798691471114240/1799341587546112/STEM/3ac5f35df13b49ada0bcf886f08fd247.png?resizew=132)
(1)将△AOE绕点O顺时针旋转90°,得△A'OE'.
①画出△A'OE';②判断点E'是否在直线ED上,并说明理由;
(2)若DE=4,OE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在Rt∆ABC中,∠ACB=90°,以AC为直径的⊙O与边AB交于点D,过点D作⊙O的切线,交BC于E.
![](https://img.xkw.com/dksih/QBM/2020/6/5/2478184188583936/2479344886530048/STEM/194b53dba593453782ce9e7c2f7aed3a.png?resizew=197)
(1)求证:点E是边BC的中点;
(2)求证:BC2=BD∙BA;
(3)当AC=BC时,四边形OCED是什么四边形,证明你的结论.
![](https://img.xkw.com/dksih/QBM/2020/6/5/2478184188583936/2479344886530048/STEM/194b53dba593453782ce9e7c2f7aed3a.png?resizew=197)
(1)求证:点E是边BC的中点;
(2)求证:BC2=BD∙BA;
(3)当AC=BC时,四边形OCED是什么四边形,证明你的结论.
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解答题-证明题
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适中
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【推荐2】如图,
内接于
,
是
的直径,
的切线
交
的延长线于点
,过点
作
交
于点
,连接
,交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/4f73ecf9-c64c-4388-b8a3-ac7152813777.png?resizew=206)
(1)求证:
;
(2)若
的半径为
,
,求
的长;
(3)在(2)的条件下,求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d948920201faba1c086843c71a1ea7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/4f73ecf9-c64c-4388-b8a3-ac7152813777.png?resizew=206)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b6e9e7f7ca6d951a9f662043889831.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f414cce1427646590a7f7144efe2e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)在(2)的条件下,求图中阴影部分的面积.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,将半径为5的扇形
,绕点O逆时针旋转
得到扇形
.
(1)
与
的数量关系是:
________
;
(2)求证:
;
(3)当
为直径时,
,求
的值及优弧
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/4e0f8022-dcae-4127-8bc2-6d1f4258e7d7.png?resizew=131)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2886a4f688bc569ae26614b10dd69738.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b7e59ebfc6706a6edc6a471f1afd97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】等边三角形
的边长为1厘米,面积为0.43平方厘米.以点A为圆心,
长为半径在三角形外画弧,交
的延长线于点
,形成扇形
;以点B为圆心,
长为半径画弧,交
的延长线于点E,形成扇形
;以点C为圆心,
长为半径画弧,交
的延长线于点F,形成扇形
.
(1)求所得的图形
的周长;(结果保留π)
(2)照此规律画至第十个扇形,求所围成的图形的面积以及所画出的所有弧长的和.(结果保留π)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5469318165ce841ae6d790b8cb4b343c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f636f76d550dfb593a25eb680cff556.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/27/06cba6bb-11f1-4c63-94da-74849a40170e.png?resizew=164)
(1)求所得的图形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7500ed29e195df10bc77853d3e2915e.png)
(2)照此规律画至第十个扇形,求所围成的图形的面积以及所画出的所有弧长的和.(结果保留π)
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