如图,
是
的直径,点C在
上,
,垂足为D,且
,
分别交
于点F、G.
(1)求证:
;
(2)求证:F是
的中点.
![](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/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7d3e8ad6760a3d4327dcb05799550f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b29351f383b4e678ee3561495d99690.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/681fe95d-5574-49c1-9b0a-3ccd2ea92874.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76bdda0312d69847ec43f2821c59ebf.png)
(2)求证:F是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
2023九年级上·江苏·专题练习 查看更多[1]
(已下线)专题03 圆的有关性质(经典基础题6种题型+优选提升题)-【好题汇编】备战2023-2024学年九年级数学上学期期中真题分类汇编(苏科版)
更新时间:2023-09-28 07:48:53
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,以腰
为直径作半圆,分别交
、
于点
、
.
![](https://img.xkw.com/dksih/QBM/2022/12/14/3130765025689600/3133047564976128/STEM/9ce29b80b17242118cb8b7cbf7990912.png?resizew=152)
(1)若
,求弧
的长;
(2)连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82695701be9f08b4e9ed437f476df63.png)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2022/12/14/3130765025689600/3133047564976128/STEM/9ce29b80b17242118cb8b7cbf7990912.png?resizew=152)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456e0f77d83975fdbdb60b499cb5b521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e792b0ef3d542237ed0903194597651.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,
是
的直径,弦
与
成
角,
交
的延长线于点B.且
.
![](https://img.xkw.com/dksih/QBM/2022/4/29/2968741049409536/2974931566059520/STEM/e63ad1e6-633b-4a5c-a859-73b0b9514a6c.png?resizew=228)
(1)求证:
为
的切线;
(2)若
,求
的长.
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.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/4c48119b3932497634478f656c752ec4.png)
![](https://img.xkw.com/dksih/QBM/2022/4/29/2968741049409536/2974931566059520/STEM/e63ad1e6-633b-4a5c-a859-73b0b9514a6c.png?resizew=228)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在△ABC中,AB=AC,以AB为直径的⊙O分别交AC,BC于点D,E,点F在AC的延长线上,且∠BAC=2∠CBF.
![](https://img.xkw.com/dksih/QBM/2020/6/9/2481089685774336/2481730874712064/STEM/49faede501a94be19d5c8b2e1a8b5cfc.png?resizew=258)
(1)求证:BF是⊙O的切线;
(2)若⊙O的直径为3,sin∠CBF=
,求BC长.
![](https://img.xkw.com/dksih/QBM/2020/6/9/2481089685774336/2481730874712064/STEM/49faede501a94be19d5c8b2e1a8b5cfc.png?resizew=258)
(1)求证:BF是⊙O的切线;
(2)若⊙O的直径为3,sin∠CBF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,点
为
弦
的中点,过点
,
作直径
,连接
,过点
的弦
交
于
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd52bd92a4b5472260ab986a20fae0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb03fe7a8768c53a56b9cc9d3eee1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6e560a63309a8976f8896f2e3dc868.png)
![](https://img.xkw.com/dksih/QBM/2020/12/11/2612156751544320/2615999335374848/STEM/91120d28-9648-4696-bf18-38f49ec3e067.png?resizew=179)
您最近一年使用:0次