1 . 如图,在四边形
中,
为
边的中点,
,
于
.
(1)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6523615f59be6afb9c85a8fd13986189.png)
______
;
(2)若
,则
的最小值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3cfda5d63b2f1a6d69013177630d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8621541881fc9a3c79bf300bc6a2f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/bd554ac8-558e-4e48-b99f-15a4d95274fb.png?resizew=202)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e702e136211878dce558e0457f15df63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6523615f59be6afb9c85a8fd13986189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57041caba590305ccb37a3a7fbd2a14.png)
您最近一年使用:0次
2 . 如图是一个隧道的横截面,若它的形状是以
为圆心的圆的一部分,路面
米,高
米,则此圆的半径
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/d68b40eb-ef4d-4394-833d-67683cda09c7.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8cc58ef27567f0ab06eb1012aec330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/d68b40eb-ef4d-4394-833d-67683cda09c7.png?resizew=138)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-28更新
|
266次组卷
|
15卷引用:安徽省滁州市2023-2024学年九年级上学期期末数学试题
安徽省滁州市2023-2024学年九年级上学期期末数学试题安徽省滁州市天长市2023-2024学年九年级上学期期末数学试题安徽省滁州市全椒县2023-2024学年九年级上学期期末数学试题河北省石家庄市第十七中学2022-2023学年九年级上学期限时训练(12月) 天津市河西区培杰中学2022-2023学年九年级上学期期末数学试卷(已下线)河北省石家庄市第十七中学2022-2023学年九年级上学期第三次月考数学测试题(已下线)第01讲 与圆有关的性质 垂径定理-【帮课堂】2023-2024学年九年级数学上册同步学与练(人教版)浙江省宁波市海曙区海曙外国语学校2023-2024学年九年级上学期期中数学试题福建省厦门市松柏中学2023-2024学年九年级上学期期中数学试题2024年辽宁省抚顺市望花区中考二模数学试题浙江省湖州市南浔区2023-2024学年九年级上学期期末数学试题(已下线)专题02 圆-垂经定理(2个考点六大类型)-2023-2024学年九年级数学下册《知识解读·题型专练》(北师大版)江苏省扬州市邗江区邗江区实验学校2023-2024学年九年级上学期10月月考数学试题贵州省铜仁市石阡县2023-2024学年九年级下学期3月月考数学试题2024年福建省福州市鼓楼区格致中学中考模拟数学试题
3 . 一条盘水管的截面如图所示,水面宽
垂直平分半径
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/62c3b53e-81e5-4694-b276-d8a6138d1d3e.png?resizew=110)
(1)求
的度数;
(2)若
的半径为6,求弦
的长.
(3)若连结
,请判断四边形
的形状,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/62c3b53e-81e5-4694-b276-d8a6138d1d3e.png?resizew=110)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e69a60fb95f19ae60c08e22f3fd5cd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)若连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7110a27677d14db9991cbc80f9fb4edf.png)
您最近一年使用:0次
2024-01-20更新
|
236次组卷
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2卷引用:2024年安徽省阜阳界首市第五中学中考一模数学试题
4 . 唐代李皋发明了“桨轮船”,这种船是原始形态的轮船,是近代明轮航行模式之先导.如图,某桨轮船的轮子被水面截得的弦
长为8米,轮子的半径
为5米,则轮子的吃水深度
为______ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/996d349a-5f34-43ed-9bc0-f7b301fb2572.png?resizew=195)
您最近一年使用:0次
2024-01-16更新
|
166次组卷
|
4卷引用:安徽省合肥市小庙中学2023-2024学年九年级下学期开学考试数学试题
5 . 如图,
为
的弦,点
在
上,
,
,
交
于点
,且
,则
的半径长为______ .
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e07c059cf40ea7392999ef9b66b2335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046aa9bbeea0009491581f881e429bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/e1442d00-352b-4883-9693-83ce342aea9b.png?resizew=156)
您最近一年使用:0次
2024-01-16更新
|
92次组卷
|
2卷引用:安徽省江淮教育联盟2023- 2024学年九年级上学期第一次月考数学试题
名校
6 . 如图,
是
的外接圆,
平分
的外角
,
,
,垂足分别是点M、N,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/3716dfe3-5993-4c75-98e9-5322375eb4f2.png?resizew=157)
(1)求证:
;
(2)如图,延长
交
于E点,若
,
,求
的半径长.
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721c75fcd58d3d54260aad0f82e09e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd6ec8fa1147280a0eaba74744b2d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9ebf55cadec703db791e748c72ee03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/3716dfe3-5993-4c75-98e9-5322375eb4f2.png?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542b5bc10c7341c04c22244f3ec16e6a.png)
(2)如图,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091611d8f6eef3aa176c8959de7132e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd9b2c3ed9d0202cbb86d33a183e6ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
7 . 如图,
是
的直径,点
,
是
上的点,且
,
分别与
,
相交于点
,
,
,点
是线段
上任意一点,则
的最小值为 ( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/95e26ec3-684d-4f14-a2be-1eb8f31890a7.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9672cc271c7f79973c34a1e179782762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c042ff18466e8165fadf343d142a4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be9f2c8cc327ec0032d04a3e788ff69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c916293b9d6c6f900869c4a222adf4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa6bf209845dc014dbd81680ec50184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fead1d5cbe29ad49ce1e64018553d5f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/95e26ec3-684d-4f14-a2be-1eb8f31890a7.png?resizew=175)
A.8 | B.![]() | C.![]() | D.6 |
您最近一年使用:0次
8 . 如图,
,
分别是
的直径和弦,
于点D,连接
,
,且
,
,则
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/3a1c022b-64b7-4e8e-bcd2-070f4163e2b6.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11c1db76cc7e1894f74a50d71736455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432cce1481829c4dfe2bd557f6e9aa4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/3a1c022b-64b7-4e8e-bcd2-070f4163e2b6.png?resizew=161)
A.24 | B.6 | C.12 | D.4.5 |
您最近一年使用:0次
9 . 如图,
是
的直径,点C、D是
上的点,且
,
分别与
、
相交于点E和F.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/1ff0936d-cf42-4330-884b-82078d611358.png?resizew=130)
(1)求证:点D为
的中点.
(2)若
,
,求
半径.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475724dd50742b873a32599f2569bad1.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/683c590673eece14fea3319c4fd5eb55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/1ff0936d-cf42-4330-884b-82078d611358.png?resizew=130)
(1)求证:点D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169145cfb31e4fc502a3b2f47a644831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b74e2b6dae540571fdd509c4e966b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
名校
10 . 如图,
是圆O的直径,C为圆上的一点,D为弧
的中点,连接
,过点C作
的垂线交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/cab0758a-fa2f-452a-b822-f673760bc0af.png?resizew=166)
(1)求证:
;
(2)
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b511eccad44ffbed4f9553e1cb1d1597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/cab0758a-fa2f-452a-b822-f673760bc0af.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
2023-12-27更新
|
183次组卷
|
7卷引用:2023年安徽省中考数学真题变式题16-20题
(已下线)2023年安徽省中考数学真题变式题16-20题2023年湖北省武汉市江岸区中考三模数学试题(5月)2023年湖北省武汉江岸区中考模拟数学试卷(5月)(已下线)2023年湖北省中考数学真题变式题16-20题湖北省武汉市江岸区武汉市培英中学2023-2024学年九年级上学期月考数学试题四川省南充市顺庆区南充高级中学2023-2024学年九年级上学期12月月考数学试题浙江省宁波市余姚市六校2023-2024学年九年级上学期11月月考数学试题