如图,O为菱形ABCD对角线上一点,以点O为圆心,OA长为半径的⊙O与BC相切于点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/9d3447d6-125a-4d8a-888a-16f021622b66.png?resizew=201)
(1)求证:CD与⊙O相切;
(2)若菱形ABCD的边长为2,∠ABC=60°,求⊙O的半径.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/9d3447d6-125a-4d8a-888a-16f021622b66.png?resizew=201)
(1)求证:CD与⊙O相切;
(2)若菱形ABCD的边长为2,∠ABC=60°,求⊙O的半径.
18-19九年级·广东潮州·期末 查看更多[9]
【区级联考】广东省潮州市潮安区2019届九年级(上)期末数学试题2018-2019学年广东省潮州市饶平县九年级(上)期末数学试卷广东省潮州市饶平县2018-2019学年广九年级(上)期末数学试卷【校级联考】甘肃省张掖市高台县2019届九年级中考数学模拟试卷【校级联考】甘肃省张掖市高台县2019届中考二模数学试题广东省广州市海珠区南武实验学校2019-2020学年九年级上学期11月考数学试题广东省潮州市潮安区、饶平县2018-2019学年九年级上学期期末数学试题广东省东莞市东华初级中学斯特班2021-2022学年八年级下学期期中数学试题河南省安阳市北关区北关区莲花学校2023-2024学年九年级上学期期中数学试题
更新时间:2019-02-26 15:50:46
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【推荐2】如图,已知⊙O是△ABC的外接圆,AD是⊙O的直径,且BD=BC,延长AD到E,且有∠EBD=∠CAB.
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