1 . 如图,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18c7dc38750d0e1787adee0055543d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-24更新
|
256次组卷
|
5卷引用:2022年黑龙江省哈尔滨市第一二四中学中考模拟数学试题
名校
2 . 正三角形
内接于圆 O,动点 P 在圆周上运动,且不与 A,B,C 重合,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
A.60° | B.120° | C.60°或 120° | D.不确定 |
您最近一年使用:0次
3 .
内接
,
于D,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/693f6019-91a1-4b6d-ab92-3fc73bf3c03d.png?resizew=436)
图1 图2 图3
(1)如图1,求证:
;
(2)如图2,作
交
的延长线于E,交
于F,延长
交
于G,连接
,求证:
;
(3)在(2)的条件下,如图3,
交
于点T,
,
,
,求
长.
![](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/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/693f6019-91a1-4b6d-ab92-3fc73bf3c03d.png?resizew=436)
图1 图2 图3
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3fb1f7775325f374315617e243cf57.png)
(2)如图2,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f007fcc7f6c091ea9e263c709b5b89c.png)
(3)在(2)的条件下,如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1116f6f0f6fad58008bcf43d4de791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa55f2da11b37dfc87f172ffb1ecaade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9620e97567191461f1a87aebb7b4f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd90d761e5a98f6195252bb41dcf9be.png)
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4 . 如图,半径为
的
上,依次有
三个点,若四边形
为菱形,则弦
所对的圆周角为____ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/8d72dd65-ba4e-489f-8b2d-ccaa49fdc8d2.jpg?resizew=110)
您最近一年使用:0次
名校
5 . 如图,等腰
中,
为
的外接圆,点
在弧
上,连接
,
,
.
(1)如图1,求证:
;
(2)如图2,过点
作
的垂线交
于点
,垂足为点
,若
,且
,求证:
;
(3)如图3,在(2)的条件下,在弧
上取一点
,连接
并延长交
于点
,连接
,延长
至点
,使
,连接
,若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c9bce67850e25759386553275f90ff9.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/b48ed218-d4b4-46f1-b668-b912d7e180b7.png?resizew=128)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/a3530fe3-7af2-4213-9fc9-29e08ba9b364.png?resizew=134)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/9801ddd4-a1e9-4b7f-98a1-f367b1f273ae.png?resizew=157)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf79368e0dca255bf8a2ca0ed9f7a9e9.png)
(2)如图2,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d343b617f0e7b6e1468010bed6b4604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f474057fed7971e2236c24574131bdd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2016a09874dbb025738f4c61ab8b64f.png)
(3)如图3,在(2)的条件下,在弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecff6005f926665a926c07ad62e0f032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ea03bf73cfbd991f8a271478a22048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6730204a4beaf026e959ea2f2f8e73bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fece41437b7637dfc85deb716a5b9c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa7387455989884544c6d047ba0a096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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6 . 如图,
是
的弦,线段
经过圆心且
,D是劣弧
上一点,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fb900d14718e4a47eb9d8a17b0dd8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/a2bfea3f-e747-4049-b164-a0da11719fb6.png?resizew=171)
A. ![]() | B. ![]() | C. ![]() | D. ![]() |
您最近一年使用:0次
7 . 已知
的半径是3,弦
,则弦
所对的圆周角的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
8 . 如图,在四边形
中,
,连接
,点F为边
上一点,连接
交
于点E,
,
,
,若
,
,则
的长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81939c1f23fa5fb48a3a270bbf52d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7daab26997b04da3bdcb7380ce1747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad761c2e61a43568b4f37e38ecbb2094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9e81ce22fb99783f862dbf232e01a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8ceff7afec45baa273b1fe2152bbbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/5/fa2b851c-17ac-44e8-90e5-a8f4c857ef05.png?resizew=162)
您最近一年使用:0次
名校
9 . 已知:四边形
为
的内接四边形,连接
,若
.
(1)如图1,求
的度数;
(2)如图2,连接
,点F为弧
上一点,连接
并延长交
于点E,若
,
,求证:
;
(3)如图3,在(2)的条件下,连接
,若
,
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa3b68ece9e596ed7d4ec91a117218a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc045e53575a5332b65da11af812394a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/0a413436-6007-4d3b-a4a4-cb280c150c84.png?resizew=583)
(1)如图1,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecff6005f926665a926c07ad62e0f032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05da7f2ef650317e15235ec4084564df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
(3)如图3,在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959b5ebb0a518727aa352cfe95837a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ade06068471a9d76e32b417bef7551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2cde89536c44372e733e3b930eb136e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
10 . 如图,已知四边形
内接于
,连接
,若
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/2023/2/28/3184694606159872/3188558730264576/STEM/49400e43eefc41c689c9de4416654c69.png?resizew=190)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a2cd212bfb2bee64799980d68d9cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d172e210be0f513aabdaaa1112ef1bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://img.xkw.com/dksih/QBM/2023/2/28/3184694606159872/3188558730264576/STEM/49400e43eefc41c689c9de4416654c69.png?resizew=190)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次