如图,
为
的半径,弦
垂直平分半径
,垂足为
.若
的长为6,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.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/828628c0876b45381c9a0edeb0fec236.png)
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/5049886a-0304-4703-8c2e-68e7d32692c0.png?resizew=135)
更新时间:2024-01-30 17:00:04
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解答题-证明题
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【推荐1】如图,在△ABC中,AB=AC,AB的垂直平分线分别交AB、AC于点E、点D,∠A=36°.求证:AD=BC.
![](https://img.xkw.com/dksih/QBM/2020/11/20/2596752880214016/2599018090397696/STEM/f10eae9494194ac690c76b5d518aed31.png?resizew=116)
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解答题-问答题
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【推荐2】概念学习:若经过一个三角形某一顶点的一条直线可把它分成两个小等腰三角形,那么我们称这个三角形为过该顶点的生成三角形.
(1)如图,在
中,
,点D在线段
的垂直平分线上,请问
是否是生成三角形?请你说明理由.
(2)若
是过顶点B的生成三角形,
是其最小的内角,且
是其中一个小等腰三角形的底边,
是另一个小等腰三角形的底角,请探求
与
之间的关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/d4a90e5b-33a9-48dd-bb5b-d5722700c118.png?resizew=130)
(1)如图,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2142ed41d6e5cfc5de5ac3002ca18ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e8f6faf46c448fe8d838fde1af495b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3b37c1b382628dc3ab9f0a97c80b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b80f6162fd1dbff226cfcb0f07f5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e8f6faf46c448fe8d838fde1af495b.png)
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解答题-证明题
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【推荐1】如图,在正方形
中,点E,F分别为边
,
上的点,且
,连接
,
交于点G,H为
的中点,连接
,过点G作
交
于点P,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/2a14d60e-f7dd-4395-b47d-88f4ca938918.png?resizew=203)
(1)求证:
;
(2)求证:
;
(3)若
,
,求PH的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6026686719b6315ce915e3caf7d94bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/2a14d60e-f7dd-4395-b47d-88f4ca938918.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02186eff168a66ba782d7496f0d803c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
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【推荐2】如图,方格纸中的每个小方格都是边长为1个单位长度的正方形,
的顶点均在格点上,在建立平面直角坐标系后,点C的坐标为
.
向左平移6个单位得到
,画出
;
(2)以原点O为对称中心,画出
关于原点O对称的
;
(3)若点P为y轴上存一动点,则
的最小值为 ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d1bdcf2fa357f627acf4b2107b646a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)以原点O为对称中心,画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
(3)若点P为y轴上存一动点,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
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解答题-证明题
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【推荐1】如图,两个圆都是以
为圆心.
![](https://img.xkw.com/dksih/QBM/2019/12/24/2361914435174400/2362128031850496/STEM/7d558057642a45ccb83db562fbde4d1f.png?resizew=179)
(1)求证:
;
(2)若
,
,小圆的半径为
,求大圆的半径
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2019/12/24/2361914435174400/2362128031850496/STEM/7d558057642a45ccb83db562fbde4d1f.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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【推荐2】如图,AB是⊙O的一条弦,OD⊥AB于点C,交⊙O于点D,连接OA.若AB=4,CD=1,求⊙O半径的长.
![](https://img.xkw.com/dksih/QBM/2020/12/3/2606309412921344/2609001535512576/STEM/39b193e12444490b87c0370200549734.png?resizew=111)
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