名校
1 . 如图,在平面直角坐标系中,点O为坐标原点,抛物线
与x轴交于点A、点B,与y轴交于点C,直线
经过点A和点C.
(1)如图1,求拋物线的解析式;
(2)如图2,点P在直线
上方的抛物线上,
轴,
交
于点Q,设点P的横坐标为t,
的长为d,求d与t的函数关系式;(不要求写出t的取值范围)
(3)如图3,在(2)的条件下,点D在第一象限,
,
交y轴于点F,连接
交直线
于点E,连接
,
,
,抛物线的对称轴交x轴于点G,交线段
于点H,
于点K,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad76fb8e38468a02d4120ffbb83fbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87490be8d0cdb7bc6c39d1a37f3bc335.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/c031b7ee-d05a-4cae-9f3a-cb41543218af.png?resizew=475)
(1)如图1,求拋物线的解析式;
(2)如图2,点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f27083267432a9352fb6677a07d461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(3)如图3,在(2)的条件下,点D在第一象限,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b899fcf56edb26a9ba102c8517cb2068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27aafe3d5b0fa59d7049747cebcdb22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537a1d0291943949b1e4ffc4d7e3780d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0d6f398c679f6446285aa457b84b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a8f1bb76ce6165559a590f88b2787.png)
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名校
2 . 如图,直角三角形
顶点
在矩形
的对角线
上运动,连接
.
,
,
,则
的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/02491f8d166e71ad8cebae44a0e535f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/5/39898ffd-5e6e-4e00-bf29-63bc92030a41.png?resizew=130)
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|
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2卷引用:江苏省盐城市东台市第五教育联盟2022-2023学年九年级下学期期中数学试题
真题
3 . 如图1,点
为等边
的重心,点
为
边的中点,连接
并延长至点
,使得
,连接
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
(1)求证:四边形
为菱形.
(2)如图2,以
点为圆心,
为半径作![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
①判断直线
与
的位置关系,并予以证明.
②点
为劣弧
上一动点(与点
、点
不重合),连接
并延长交
于点
,连接
并延长交
于点
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e47634c8bc677c86728a212247896b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82535f84d20430e7c85cdb8f1460a844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408ad218909066cf90ee8372e8de694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a022d9ed35c8ce5ce01c2663a7115f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/15924d91-029f-4a84-9fbd-bdb4e04432d3.png?resizew=469)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d7ef5de6f41b5a6054c07403544445.png)
(2)如图2,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c51486490ea53d773a76da9fda285b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
①判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e65e147b109f2bbfd3a3f502bbc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e883f81c66ceef54d2d0556a68ed585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577250c86a14c7a2990bf9852c7213d5.png)
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1236次组卷
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7卷引用:2023年湖南省娄底市中考数学真题
2023年湖南省娄底市中考数学真题(已下线)专题2.26 切线的性质与判定(直通中考)-2023-2024学年九年级数学上册基础知识专项突破讲与练(苏科版)(已下线)专题24.25 切线的性质与判定(直通中考)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题18 与圆有关的位置关系-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)(已下线)专题17 圆的有关概念、性质及计算-学易金卷:三年(2021-2023)中考数学真题分项汇编(湖南专用)(已下线)第9讲 圆的有关性质及与圆有关的位置关系(已下线)第3讲 证明题
4 . 在等边
中,
,点
是
的中点,点
分别是
边上一点(不与点
重合).
(1)如图1,当点
为
中点,点
为
中点时,求
的长度;
(2)如图2,将线段
绕着点
顺时针旋转
得到线段
,连接
,当
三点在同一条直线上时,求
的长度;
(3)如图3,将线段
绕着点
顺时针旋转
得到线段
,延长
交线段
于点
,探索
三条线段之间的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a90be2d6a807ff7d00ce353164448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e478787ebfeb68a5a7594dbd9eecd4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/1568923d-4382-43b1-839a-d7c668b0aea9.png?resizew=472)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8116301fbb172f9134a8ad4257a910c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(3)如图3,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d470b145084aa24c7842c6f01a4a937.png)
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真题
名校
5 . 在平面直角坐标系
中,
为坐标原点,已知抛物线
与
轴交于点
,抛物线的对称轴与
轴交于点
.
(1)如图,若
,抛物线的对称轴为
.求抛物线的解析式,并直接写出
时
的取值范围;
(2)在(1)的条件下,若
为
轴上的点,
为
轴上方抛物线上的点,当
为等边三角形时,求点
,
的坐标;
(3)若抛物线
经过点
,
,
,且
,求正整数m,n的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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://img.xkw.com/dksih/QBM/editorImg/2023/7/14/de963733-a6e9-411f-9274-0d89669b28db.png?resizew=397)
(1)如图,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a84757fa1fc2e9bf6134c12dce7fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236eb567f8d64885db1db31ab2d123aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f409b28f7cb97726646e79709ad25190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732c018e69d42df32aaac87095890b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9045f99b8590fb72176eb30ff1d4e8b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7919606fa820131bf60526ac17bd26a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
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2023-07-13更新
|
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4卷引用:2023年湖北省恩施州中考数学真题
2023年湖北省恩施州中考数学真题 (已下线)专题32 函数与几何综合问题(共25题)-学易金卷:2023年中考数学真题分项汇编(全国通用)广东省 广州市越秀区铁一中学2023-2024学年学九年级上学期月考数学试题广东省广州市第二中学2023-2024学年九年级上学期月考数学试题
真题
名校
6 . 如图,圆内接四边形
中,
,连接
,
,
,
,
.则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5832f56c531db62bf8f49702bf30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8c62f72dce65bb535b38cff7b84c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-06-29更新
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15卷引用:2023年内蒙古赤峰市中考数学真题
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7 . 如图,在平面直角坐标系中,
、
、
、
,点P在第一象限,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3f9d5a2752ca0a9cf9f5b8ad62d9fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59cfde62f88633540664c8607e314466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fddda9e7f4d7140bf357d76c9e23d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fea2db3a4ba176969a5a7c0e37c6df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/18/f70ffc98-8381-4770-ae2d-bd77533fbef1.png?resizew=150)
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真题
名校
8 . 如图,在四边形
中,
,以
为腰作等腰直角三角形
,顶点
恰好落在
边上,若
,则
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8be9eee90517daed77873cbaedcff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ba3f676fda6a2aaaa55c9f32874a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
A.![]() | B.![]() | C.2 | D.1 |
您最近一年使用:0次
2023-06-15更新
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1967次组卷
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13卷引用:2023年浙江省丽水市中考数学真题
2023年浙江省丽水市中考数学真题(已下线)专题09 几何图形初步与三角形相关计算(47题)-学易金卷:2023年中考数学真题分项汇编(全国通用)(已下线)专题11 三角形-学易金卷:三年(2021-2023)中考数学真题分项汇编(浙江专用)(已下线)专题13 多边形与平行四边形-学易金卷:三年(2021-2023)中考数学真题分项汇编(浙江专用)(已下线)2023年浙江省丽水市中考数学真题变式题6-10题辽宁省/鞍山市千山区初中阶段性教学成果评估九年级数学试卷题2024中考辽宁省鞍山市千山区一模考前数学模拟预测题2023年广东省广州市部分学校中考一模数学试题2024年山东省威海市经济技术开发区皇冠中学中考一模数学模拟试题(已下线)专题15 特殊三角形(考点回归+练透中考13类核心重点考向)-备战2024年中考数学真题题源解密(全国通用)(已下线)热点06++全等三角形与特殊三角形1(已下线)重难点04 圆的压轴类型归纳(8大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)(已下线)专题05 圆的证明与计算(隐圆模型,与圆有关的相似、全等和计算等问题)-2024年中考数学二轮热点题型归纳与变式演练(全国通用)
名校
9 . 如图1,在
中,
是斜边
上一动点,以点A为圆心,
长为半径作圆A交
于点F,设圆A半径为r,若满足
,连接
并延长交圆A于点E,连接
.
(1)如图1,若
,求
半径;
(2)如图2,点D在运动过程中,
和
之间有怎样的数量关系?请说明理由;
(3)当点D在斜边
上运动时,求
的取值范围 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc48a4a03b69e60bb22a17b99a8f147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09e21be22b500a554407d33a3150c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b8bcdebafe3c356df23ac5ddb1a845.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/5f58f1b6-6605-41e4-9849-dd3ddd3f6154.png?resizew=287)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e9975f9285760666f304851b52d6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
(2)如图2,点D在运动过程中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f7e1c0456e86eee4f22e913a1a5778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48ada1e360efadd2022d0ee066ec8d6.png)
(3)当点D在斜边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9295dcde3e98831107972b65571a5cc.png)
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10 . 如图,
为等边
的外接圆,
的半径为
,点D在劣弧
上,连接
,
与
交于点E,
.四边形
的面积等于______ .
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8572e7aa6d36113cc5ed43c47035378f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/b191d152-4675-4399-b086-e9ceabaecaae.png?resizew=162)
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