如图,AB是⊙O的直径,弦
,分别过M、N作AB的垂线,垂足为C、D,以下结论
①AC=BD;
②AM=BN;
③若四边形MCDN是正方形,则MN=
AB;
④若M为弧AN的中点,则D为OB中点.
所有正确结论的序号是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31307b00524e461b0ad8dfbcdf24bacf.png)
①AC=BD;
②AM=BN;
③若四边形MCDN是正方形,则MN=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
④若M为弧AN的中点,则D为OB中点.
所有正确结论的序号是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/2366e6e1-0ef9-4ba8-9913-f942f159aaf3.png?resizew=156)
21-22九年级上·北京·期中 查看更多[6]
北京市第八十中学2021-2022学年九年级上学期期中数学试题北京市朝阳区对外经济贸易大学附属中学2022-2023学年九年级上学期期中考试数学试题北京市海淀区清华大学附属中学2022-2023学年九年级上学期期中数学试卷安徽省合肥市长丰县城关中学2022-2023学年九年级上学期数学第二次月考测试题(已下线)第12讲 圆的对称性-【帮课堂】2022-2023学年九年级数学下册同步精品讲义(北师大版)湖北省黄石市太子中学2023-2024学年度九年级上学期期中模拟数学试题
更新时间:2021-12-03 10:09:23
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