如图,AB是⊙O的直径,点M是△ABC的内心,连接BM并延长交AC于点F交⊙O于点E,连接OE与AC相交于点D.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897050462617600/2936041397723136/STEM/e7bcacfa519b4e288def2550f6328fb6.png?resizew=134)
(1)求证:OD=
BC
(2)求证:EM=EA
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897050462617600/2936041397723136/STEM/e7bcacfa519b4e288def2550f6328fb6.png?resizew=134)
(1)求证:OD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(2)求证:EM=EA
21-22九年级上·四川凉山·期末 查看更多[3]
四川省凉山彝族自治州2021-2022学年九年级上学期期末数学试题(已下线)第07讲 直线与圆的位置关系-【暑假自学课】2022年新九年级数学暑假精品课(苏科版)(已下线)第14讲 对称图形—圆(全章复习与测试)-【暑假自学课】2023年新九年级数学暑假精品课(苏科版)
更新时间:2022-03-14 14:14:25
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名校
【推荐1】如图1,BC为△ABC的外接圆⊙O的直径,点M为△ABC的内心,连接AM并延长交⊙O于点D,连接CD
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874325038530560/2875087680634880/STEM/c1e461ede18e4e0fa048209c7c4530ab.png?resizew=97)
(1)求∠BCD的大小
(2)求证:CD=DM
(3)如图2,连接OM,若AM=
,OM=
,求AC的长
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874325038530560/2875087680634880/STEM/c1e461ede18e4e0fa048209c7c4530ab.png?resizew=97)
(1)求∠BCD的大小
(2)求证:CD=DM
(3)如图2,连接OM,若AM=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
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解答题-证明题
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适中
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【推荐2】如图,
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