![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/86661ade-fb7c-4a7f-941c-419e9e921352.png?resizew=384)
【问题背景】
(1)如图1,点B,C,D在同一直线上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca25fc6bdeef740a0d0a904deaef0247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21cbf2262267d64aadbb9f51b599ddb2.png)
【问题探究】
(2)在(1)条件下,若点C为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce552140d3d4944180b2643a2114b024.png)
【拓展运用】
(3)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e001897d70ceee81406f3b01d284b83b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e5c5f517b79d3025279965febbe14c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
22-23九年级下·湖北武汉·阶段练习 查看更多[7]
湖北省武汉市武昌区部分学校2022-2023 学年九年级下学期3月调考数学试卷2023年湖北省武汉市七校中考二模数学试题(已下线)2023年武汉二模(几何综合)(已下线)24.2+与圆有关的位置关系(题型精讲精练)3(原卷版)(已下线)24.2+与圆有关的位置关系(题型精讲精练)1(原卷版)江苏省扬州市江都区江都区第三中学2023-2024学年九年级上学期10月月考数学试题河北省张家口市张北县张北成龙学校2023-2024学年九年级下学期开学考试数学试题
更新时间:2023-04-01 09:34:47
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,以
为直径的
分别交线段
、
于点
、
,过点
作
,垂足为
,线段
、
的延长线相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/0dc65955-1865-45b9-8d06-a5390e210c27.png?resizew=194)
(1)求证:
是
的切线;
(2)若
,
,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/047dc9795efa99b6fb9fdf9778085dab.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/0dc65955-1865-45b9-8d06-a5390e210c27.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998329f9cdb86f5d60d7d5d70fc3781e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bc4c9dd737193f7acce692b23500d4.png)
您最近一年使用:0次
解答题-应用题
|
适中
(0.65)
【推荐2】如图,轮船沿正南方向以30海里/时的速度匀速航行,在M处观测到灯塔P在其南偏西
方向上,航行2小时后到达N处,观测到灯塔P在其南偏西
方向上,若该船继续向南航行至离灯塔最近的位置,求此时轮船离灯塔的距离(由科学计算器得到
,
,
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1de27e79e9a276238d608f828e31709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5265fb57e03d161849d8fe8142a2f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a5f766cc057a7b477131a57e0fe273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87d0de4faa034074f186248f8f3e840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92520ca0e0eab8e79212bd59fa0aae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617f8c2ed7bdd2eae357f42f2d1283c4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/23e62009-e6a9-4631-9a44-f616552e7787.png?resizew=85)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,BC是⊙O的直径,BD平分∠ABC交⊙O于点D,DA⊥BA于点A,AB交⊙O于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/bcbe5537-d5c2-4746-9dc9-1fe3a7c0d137.png?resizew=171)
(1)求证:AD是⊙O的切线;
(2)若AD=6,AE=3,求
的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/bcbe5537-d5c2-4746-9dc9-1fe3a7c0d137.png?resizew=171)
(1)求证:AD是⊙O的切线;
(2)若AD=6,AE=3,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3281279fd172040eadc139ee61581a5a.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,以
边为直径作
交
边于点
,过点
作
于点
,
、
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/6893f36d-a945-4791-87b7-1f4d1df95fcf.png?resizew=147)
(1)求证:
是
的切线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3f76eae0eba43787de2d8cc840034d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20e5d585fbf903ee5affa6d083ab95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8946331b0a9d86e1a9c78797f3021455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/6893f36d-a945-4791-87b7-1f4d1df95fcf.png?resizew=147)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab5fe932f835a3bae276b796e9d2919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61ffb2fb597719ab912fcd96a0b11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b435c19e9c321042e5af4df44e05a525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.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,E是△ABC的内心,线段AE的延长线交△ABC的外接圆于点D.
![](https://img.xkw.com/dksih/QBM/2018/12/23/2103188860256256/2136853249687552/STEM/68e0058f304e48568e4408e26bbfc394.png?resizew=113)
(1)求证:ED=BD;
(2)若∠BAC=90°,△ABC的外接圆☉O的直径是6,求BD的长.
![](https://img.xkw.com/dksih/QBM/2018/12/23/2103188860256256/2136853249687552/STEM/68e0058f304e48568e4408e26bbfc394.png?resizew=113)
(1)求证:ED=BD;
(2)若∠BAC=90°,△ABC的外接圆☉O的直径是6,求BD的长.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在梯形ABCD中,AB∥CD,⊙O为内切圆, E为切点.若AO=8cm,DO=6cm,求OE的长.
![](https://img.xkw.com/dksih/QBM/2019/8/16/2270082007007232/2270282851565569/STEM/e7dbda39986d43e08c40880d3cbaa01b.png?resizew=206)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
解题方法
【推荐1】如图,矩形
中,
,
,把矩形折叠,使得点
与射线
上的动点
重合,(
不与点
、
重合),
为折痕,点
、
分别在边
、
上.
![](https://img.xkw.com/dksih/QBM/2021/4/14/2699825411227648/2706251473788928/STEM/17c9c09f-c2cd-41b0-8209-e99930c48872.png?resizew=539)
(1)请用尺规在图(1)中作出过点
、
、
的
(不写作法,保留作图痕迹);
(2)连接
,若直线
与过
、
、
三点的
相切,求直线
与
的位置关系;
(3)把
绕点
顺时针旋转
得
,当
落在边
上时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/4/14/2699825411227648/2706251473788928/STEM/17c9c09f-c2cd-41b0-8209-e99930c48872.png?resizew=539)
(1)请用尺规在图(1)中作出过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/3d97cdc586744d208b6f69c9813af977.png)
(3)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc96cbcfa8d5e19732facffb936bec5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef69e6ff24cb4753b25956c74d94115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】综合与实践
背景阅读
早在三千多年前,我国周朝数学家商高就提出:将一根直尺折成一个直角,如果勾等于三,股等于四,那么弦就等于五,即“勾三、股四、弦五”.它被记载于我国古代著名数学著作《周髀算经》中,为了方便,在本题中,我们把三边的比为
的三角形称为
型三角形,例如:三边长分别为
,
,
或
,
,
的三角形就是
型三角形,用矩形纸片按下面的操作方法可以折出这种类型的三角形.
实践操作
如图1,在矩形纸片
中,
,
.
第一步:如图2,将图1中的矩形纸片
沿过点
的直线折叠,使点
落在
上的点
处,折痕为
,再沿
折叠,然后把纸片展平.
第二步:如图3,将图2中的矩形纸片再次折叠,使点
与点
重合,折痕为
,然后展平,隐去
.
第三步:如图4,将图3中的矩形纸片沿
折叠,得到
,再沿
折叠,折痕为
,
与折痕
交于点
,然后展平.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/9eba789f-d50f-4a21-bf7a-45a251a2eb54.png?resizew=497)
问题解决
(1)请在图4中判断
与
的数量关系,并加以证明;
(2)请在图4中证明
是
型三角形;
(3)探索发现在不添加字母的情况下,图4中还有哪些三角形是
型三角形?请找出并直接写出它们的名称.
背景阅读
早在三千多年前,我国周朝数学家商高就提出:将一根直尺折成一个直角,如果勾等于三,股等于四,那么弦就等于五,即“勾三、股四、弦五”.它被记载于我国古代著名数学著作《周髀算经》中,为了方便,在本题中,我们把三边的比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d44d5798d856568f7f6e5e91269ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e95c5c251ddd1aebc68d33892419305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa82a15632a545ce2cc6dc998899807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e95c5c251ddd1aebc68d33892419305.png)
实践操作
如图1,在矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6996aa31bf1486ced60c2249a6e6989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b79850d6b00a67110e77a33d1c46b5a.png)
第一步:如图2,将图1中的矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
第二步:如图3,将图2中的矩形纸片再次折叠,使点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
第三步:如图4,将图3中的矩形纸片沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88c6de1903f0783e762ae6b1fcf1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b123ae31090740589ba27a846620b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/9eba789f-d50f-4a21-bf7a-45a251a2eb54.png?resizew=497)
问题解决
(1)请在图4中判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7443b09d74b9180b1760662b8c10e608.png)
(2)请在图4中证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654a3aacb8539b4996023caf5b55c85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e95c5c251ddd1aebc68d33892419305.png)
(3)探索发现在不添加字母的情况下,图4中还有哪些三角形是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e95c5c251ddd1aebc68d33892419305.png)
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