名校
1 . 问题提出
(1)如图①,
的半径为4,圆心O到直线l的距离为6,则圆上一动点P到直线l的距离的最大值为______,最小值为______.
问题探究
(2)如图②,已知
,若
,求
的长.
问题解决
(3)如图③,在四边形
中,
,E为
的中点,
且
.在四边形内部存在一点P使得
,连接
,将
绕点B逆时针旋转
至
,连接
,问是否存在F使得
的面积最大?若存在,请求出
面积的最大值;若不存在,请说明理由.
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
问题探究
(2)如图②,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3761d166d3fba7370189812bc90b431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d625c450c03d20451028d887fd5d8bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
问题解决
(3)如图③,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448ad48b1fdeb5da3497de05b44602b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b173ac8cc4ac4f1c9e1daaa605fbb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a1bf64ba772922fe58b5322eb4bced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6699ab8ef5ac674271983738e6b522b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
您最近一年使用:0次
2024-01-08更新
|
109次组卷
|
2卷引用:陕西省西安市高新区第三初级中学2023-2024学年九年级上学期第二次月考数学试题
2 . 阅读理解:
(1)问题初现:如图1,在
中,
,D是
外一点,且
,则
;
思路:若以点A为圆心,
为半径画
,则点C、D必在
上,
是
的圆心角,而
是圆周角,从而可容易得到
的度数;
(2)问题解决:如图2,在四边形
中,
,求
的度数;
思路:可以通过证明A、B、C、D四点共圆,再利用圆周角的性质求出∠BAC的度数.请写出详细的解题过程.
(3)问题拓展:如图3,在
中,
,
是
边上的高,且
,则
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/fa18b7a6-364e-49e0-878b-b032e3413925.png?resizew=490)
(1)问题初现:如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ed2b331902d2da7a2b786c544b33f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b5c0e0724cce5c25a88dca5e9220c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
思路:若以点A为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
(2)问题解决:如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e92a7dce502488f7748697e0e9e4475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
思路:可以通过证明A、B、C、D四点共圆,再利用圆周角的性质求出∠BAC的度数.请写出详细的解题过程.
(3)问题拓展:如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00885733a857259e9339bd8be27bb39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
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名校
3 . 【初识模型】
(1)如图①,在
中,D是
上一点,
,
,连接
.
求证:(Ⅰ)
;
(Ⅱ)
.
【再研模型】
(2)如图②,在
中,D是
上一点,
.求证:
.
【应用模型】
(3)如图③,直线
与
交于点O,
,一辆快车和一辆慢车分别从A,B两处沿
,
方向同时匀速行驶,快车速度是慢车速度的2倍,在行驶过程中两车与某一定点P所组成的三角形的形状始终不变.当两车距离为700m时,求慢车到定点P的距离.
(1)如图①,在
![](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/d648543bde3d96a8e85d4b24ee708665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42271bb3bc3992db72d724c0536082cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
求证:(Ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a86aa62cdfa88231647f032ef523d3.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffae22f161495ba3552ee0c1caf53ae.png)
【再研模型】
(2)如图②,在
![](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/ee1abda33112a4cf058ea84ae07a38be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42271bb3bc3992db72d724c0536082cc.png)
【应用模型】
(3)如图③,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.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/7785afeeaf274892253d04b4f693b367.png)
您最近一年使用:0次
2023-12-16更新
|
178次组卷
|
3卷引用:湖南省长沙市湖南师范大学附属中学2023-2024学年九年级上学期第四次月考数学试题
4 . 如图1,圆内接四边形
为优弧
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/ea8ed23d-d1e9-4e79-a6b8-c74449d92002.png?resizew=512)
(1)求
的度数;
(2)如图2,连接
,若
,求
的值:
(3)如图3,若
为
的中点,
为
的中点,连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd5db3409a57f75dedd5e78756a2a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb49d869110f27140f5c1934143db2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/ea8ed23d-d1e9-4e79-a6b8-c74449d92002.png?resizew=512)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ba8b214034c287276f4966069d95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54f1dbb70902c9f9cc16f39d6572819c.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b41a42708d23902df4b566d7f738fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a3f5d73bae2ab3a31c353d38382d25.png)
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5 . 综合与实践
问题情境:小华发现这么一类四边形,有一组对角之和为直角的四边形,小华将这类四边形命名为对余四边形.
猜想证明:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/f637af38-40db-49df-af07-d47dd2205e78.png?resizew=275)
(1)若四边形
是对余四边形,则
与
的度数之和为__________.
(2)如图1,在
上有A,B,C三点,
是
的直径,
,
相交于点D.四边形
是对余四边形吗?若是,请给出证明;若不是,请说明理由,拓展探究:
(3)如图2,在对余四边形
中,
,
,
,则线段
和
之间有怎样的数量关系?请给出你的猜想,并说明理由.
问题情境:小华发现这么一类四边形,有一组对角之和为直角的四边形,小华将这类四边形命名为对余四边形.
猜想证明:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/f637af38-40db-49df-af07-d47dd2205e78.png?resizew=275)
(1)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
(2)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)如图2,在对余四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6662097cf94dc37facdaba44b49966d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e545f31f7cc57a31843f5adfd02941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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2023九年级上·全国·专题练习
6 . 如图,
是
斜边
的中点,
于
,延长
至
,使得
,
为
上任意一点,过
作
于
,连接
交
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/2df752ff-39fd-4c5d-baee-c18a59186984.png?resizew=238)
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2e11514297c8a2c185373e038767e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d55963a9b9b02737110f57a377b41cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea39c156a4858d85b7f1238eca69f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3791f7eb4d33d52bf7a73c1b3e75f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d498c5bd6f0bc27ab2ebd2c003c666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/2df752ff-39fd-4c5d-baee-c18a59186984.png?resizew=238)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0118139a343c07945814da49fc480ad.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfb4e5f108235a7f87ef7b4bf2eedd4.png)
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7 . 在平面直角坐标系中,
为坐标原点,二次函数
的图象交
轴负半轴于点
,交
轴正半轴于点
,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/d0155b51-5c48-40a5-8314-f142b2c15d70.png?resizew=353)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3f80e1bf-2254-4839-b5b0-86513506ed51.png?resizew=350)
(1)如图1,求
的值;
(2)如图2,点
在第二象限的抛物线上,连接
交
轴于点
,连接
,设点
的横坐标为
的面积为
,求
与
的函数关系式;(不要求写出自变量
的取值范围)
(3)如图3,在(2)的条件下,点
是第一象限内,直线
上方任意一点,点
在线段
上,连接
,线段
与线段
交于点
,过点
作
交抛物线于点
,若
,
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14aaf22c9c491369fc03ab394fe66a39.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/81dea63b8ce3e51adf66cf7b9982a248.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/8b9c2c0f8452be31ab6a0509fc926a4e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/d0155b51-5c48-40a5-8314-f142b2c15d70.png?resizew=353)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3f80e1bf-2254-4839-b5b0-86513506ed51.png?resizew=350)
(1)如图1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)如图2,点
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b644687d8fa7743de60d1df1098e7da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0695851c385daa1a77b5b1bfc96a24a3.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/36a1b09c653185842513e24ebba60bb3.png)
(3)如图3,在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de8d2cf42f8cf888aaf6c390df14697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59faf75f0c95312e556ae905b3ff5b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b67e2982f20ce693ec74cad72d81744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3b8ed5b672d717e10916dbc635aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d95c719dea321c4e73f7293c7b9228d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2023-12-08更新
|
152次组卷
|
2卷引用:黑龙江省哈尔滨虹桥中学2023-2024学年九年级上学期月考数学试题
名校
8 . 如图,
为等边
的外接圆,点
在劣弧
上运动(不与点
重合),连接
.则
的度数为______ .若
的面积是
,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](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/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342ba1917a6b854ad111a3e6f5514934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94773f515ba3c49295b77b178f2df4d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/d35142fe-bcca-485f-89ea-ef7bf979fd42.png?resizew=141)
您最近一年使用:0次
2023-12-03更新
|
214次组卷
|
3卷引用:广东省广州市香江中学2023-2024学年九年级上学期期中数学试题
名校
9 . 如图,
中,
,
,双曲线
.经过
两点(
在
的左侧),
轴于
,
轴于
,连接
交
于
.下列结论正确的个数是( )
;
;
;
;
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/7a27624d-a978-4f5d-b9e2-1398ca58a353.png?resizew=219)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b352fa3e781df195ceccca90c3932a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ec371d5dbc19d236bf8a1f084031e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa50346237f69307a6f08037562e67e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a37e8519ea115c1777d031d9963583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.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/5862fb8bb359e111a5896f1389ac1126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a384ae8c7e095d996e83f338abeec21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c8be7a0591f397a7e246d194b453b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c4febd75504def162a635540291616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728c4179f3dfae6ad461e4a474e36393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d146dc47943cb7c1657898e7f3c699c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fcf28a31e9f9ce77d37553098ec3510.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/7a27624d-a978-4f5d-b9e2-1398ca58a353.png?resizew=219)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 等腰
绕点C顺时针旋转,旋转角度为β,得到等腰
.线段
与直线
交于点M,连
.
(1)如图1,点B的对应点E恰好落在线段
上.
猜想:
与
的数量关系为 ,线段
与
的位置关系为 ;
(2)探究:当
时,线段
的长度的最大值和最小值分别是多少?
(3)拓展:当旋转到如图2所示位置时,(1)中的结论是否仍然成立;若成立,证明你的结论;若不成立,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d37ccd935af060538b11eaeb7550f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdd83352f65446c38e118b0387fe7d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/12/0e7c1b1e-089b-4599-8a3f-c92477399e51.jpg?resizew=325)
(1)如图1,点B的对应点E恰好落在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
猜想:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)探究:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799cd63abe4274a6c673c4effdbfc2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)拓展:当旋转到如图2所示位置时,(1)中的结论是否仍然成立;若成立,证明你的结论;若不成立,请说明理由.
您最近一年使用:0次