如图,在半径为1的
中,直径
与直径
的夹角
,点P是劣弧
上一点,连接
分别交
、
于点M、N.
,求证:
.
(2)猜想线段
与
之和是否为定值?若是,请求出这个定值;若不是,请说明理由.
(3)过点C作
的切线
,过点P作
的切线
,当直线
和
的夹角为
时,求弧
的长.
(4)求证:
.
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c3b184adb06f96bacedc27c6b21b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64be7393b5b0a6aa3f1a2d3875801786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e4b16c2c6c9bd089da78122e9d2511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
(2)猜想线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
(3)过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391479c151307826c9765a47a5f10503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(4)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648f09f15923bda301ad5f9dda405b98.png)
更新时间:2024-05-22 22:05:56
|
相似题推荐
解答题-证明题
|
较难
(0.4)
真题
【推荐1】如图1,锐角
内接于
,D为
的中点,连接
并延长交
于点E,连接
,过C作
的垂线交
于点F,点G在
上,连接
,若
平分
且
.
(1)求
的度数.
(2)①求证:
.
②若
,求
的值,
(3)如图2,当点O恰好在
上且
时,求
的长.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162ce08ead3fc7f199a7ca1616247abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2c8b74eba76c0354cba13efffbb73f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29f9f4fb55def567f40a93a87f466c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a01eac79ff7ca76aebf5543199f223.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/18/8c8e43e5-1542-43c4-90dc-e9aec6a99f19.png?resizew=423)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec412ebd940d71b983ce4877e3401ee.png)
(2)①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4474c82ae786e175b5e603b81bc8018d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b832a541b0c06d650c0cd10b176226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df0af645b7f0286d501b9f83fe3b7f.png)
(3)如图2,当点O恰好在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e563312ccec5351634ed0a3bf4c984f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】已知抛物线
(
)经过A(5,0),B(6,1)两点,且与y轴交于点C.
(1)求抛物线
(
)的函数关系式及点C的坐标;
(2)如图1,连接AB,在题(1)中的抛物线上是否存在点P,使△PAB是以AB为直角边的直角三角形?若存在,求出点P的坐标;若不存在,请说明理由;
(3)如图2,连接AC,E为线段AC上任意一点(不与A重合)经过A、E、O三点的圆交直线AB于点F,求出当△OEF的面积取得最小值时,点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c977d0f39570f4f89be26efe20cc056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c977d0f39570f4f89be26efe20cc056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(2)如图1,连接AB,在题(1)中的抛物线上是否存在点P,使△PAB是以AB为直角边的直角三角形?若存在,求出点P的坐标;若不存在,请说明理由;
(3)如图2,连接AC,E为线段AC上任意一点(不与A重合)经过A、E、O三点的圆交直线AB于点F,求出当△OEF的面积取得最小值时,点E的坐标.
![](https://img.xkw.com/dksih/QBM/2021/10/15/2829866343923712/2831526104596480/STEM/caebf7f7daa342afb984505572635dbf.png?resizew=363)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图,平行四边形
中,
,
,
,点P在对角线
上运动(点P不与点A重合),以P为圆心,
为半径作
.
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101529457655808/3102642431410176/STEM/498d9258e85f43119524b38ad32e4349.png?resizew=179)
(1)当
与边
相切时,
.
(2)当
与边
相切时,求
的值.
(3)随着
的变化,
与平行四边形
的边的公共点的个数也在变化.请根据
的取值范围探索
与平行四边形
四边的公共点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
![](https://img.xkw.com/dksih/QBM/2022/11/3/3101529457655808/3102642431410176/STEM/498d9258e85f43119524b38ad32e4349.png?resizew=179)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524f25e1eedbfe399f7f42db890ab89a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(3)随着
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】如图,在Rt△ABC中,∠A=90°,点D、E分别在AC、BC上,且CD·BC=AC·CE,以E为圆心,DE长为半径作圆,⊙E经过点B,与AB、BC分别交于点F、G.
![](https://img.xkw.com/dksih/QBM/2018/6/11/1965066191552512/1965790989639680/STEM/7d27a8192c674a088b378419def7339f.png?resizew=173)
(1)求证:AC是⊙E的切线;
(2)若AF=4,CG=5,求⊙E的半径;
(3)若Rt△ABC的内切圆圆心为I,求⊙I的面积.
![](https://img.xkw.com/dksih/QBM/2018/6/11/1965066191552512/1965790989639680/STEM/7d27a8192c674a088b378419def7339f.png?resizew=173)
(1)求证:AC是⊙E的切线;
(2)若AF=4,CG=5,求⊙E的半径;
(3)若Rt△ABC的内切圆圆心为I,求⊙I的面积.
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】思考发现:
![](https://img.xkw.com/dksih/QBM/2021/1/25/2645974664880128/2665091739508736/STEM/488bbcfd-3806-4fb8-9d0e-cc672ef8bb2e.png)
(1)如图1,点A和点B均在
上,且
,点P和点Q均在射线
上,若
,则点P与
的位置关系是___________;若
,则点Q与
的位置关系是__________.
问题解决:
如图2,四边形
中,
,
,且
,
.
(2)若点P是
边上任意一点,且
求
的长;
(3)如图3,以B为圆心,
为半径作弧,交
的延长线于点E,若点Q为弧
上的动点,过点Q作
于点H,设点I为
的内心,连结
,
,当点Q从点C运动到点E时,则内心I所经过的路径长为___________.(直接填空)
![](https://img.xkw.com/dksih/QBM/2021/1/25/2645974664880128/2665091739508736/STEM/488bbcfd-3806-4fb8-9d0e-cc672ef8bb2e.png)
(1)如图1,点A和点B均在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5479a3dc9e022f1c6aab7086852ab59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d05e7d7729b4010b54c9078dbfb8b0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
问题解决:
如图2,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59281d3136f2c67c078d98842171224d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225041f087d9652c63197694c7283307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97be8206012b8d5b1402dfa5e9761196.png)
(2)若点P是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a092c919090e3809af5871834d39874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
(3)如图3,以B为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4bbf76c3338d4da45034fa715bfeaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dab05fc40890976fc609fcda4e42414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9020059d62af7498039f091de6f005ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfb288e038f8326d4e92c231a8be10d.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
真题
名校
【推荐2】如图,在矩形纸片ABCD中,已知AB=1,
,点E在边CD上移动,连接AE,将多边形ABCE沿直线AE折叠,得到多边形
,点B、C的对应点分别为点
、
.
(1)当
恰好经过点D时(如图1),求线段CE的长;
(2)若
分别交边AD、CD于点F、G,且
(如图2),求
的面积;
(3)在点E从点C移动到点D的过程中,求点
运动的路径长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4793568b2f0329dc06cc80050b50650d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b8179e09ef3d4054edba6cab39a21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4cfbcf4ecbca8f964985f4a2d3700ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e51f52ef95dc83538b657ea89d1c79.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e51f52ef95dc83538b657ea89d1c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a185f27095e55a52afcf2afe08519975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7693bb2af0f6a442c72ce2a2ebd1d.png)
(3)在点E从点C移动到点D的过程中,求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761678811136/1773761679278080/STEM/4e4c7a15-2d39-4f28-a2b5-6dadf8858281.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐1】如图,在矩形
中,
,
,点E是
边上的动点,将矩形
沿
折叠,点A落在点
处,连接
.
(1)如图1,求证∶
;
(2)如图2,若
,求
;
(3)点E在
边上运动的过程中,
的度数是否存在最大值,若存在,求出此时线段
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e34f3fbb1adf23cf81d7005f4387a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/14/644b4de0-4cc0-4398-b62c-b4bee1360d7a.png?resizew=635)
(1)如图1,求证∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b62cb975f261532195c508be8e890f.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97878915ceefd7aeccb156bc318b5da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043236c1b665b407929645dffea68d76.png)
(3)点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6a780bd6bbffad70d7430523a74cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图1,抛物线y=-
x2+
x+
与x轴交于A、B两点(点A在点B的左侧),交y轴于点C.将直线AC以点A为旋转中心,顺时针旋转90°,交y轴于点D,交拋物线于另一点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/eb067446-7647-4a87-b6e6-eb313911506e.png?resizew=370)
(1)求直线AE的解析式;
(2)点F是第一象限内抛物线上一点,当△FAD的面积最大时,求出此时点F的坐标;
(3)如图2,将△ACD沿射线AE方向以每秒
个单位的速度平移,记平移后的△ACD为△A′C′D′,平移时间为t秒,当△AC′E为等腰三角形时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/eb067446-7647-4a87-b6e6-eb313911506e.png?resizew=370)
(1)求直线AE的解析式;
(2)点F是第一象限内抛物线上一点,当△FAD的面积最大时,求出此时点F的坐标;
(3)如图2,将△ACD沿射线AE方向以每秒
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
您最近一年使用:0次