如图,在平行四边形ABCD中,∠ABC、∠BCD的平分线相交于点O,BO延长线交CD延长线于点E,求证:OB=OE
![](https://img.xkw.com/dksih/QBM/2012/1/8/1573326786715648/1573326828339200/STEM/e30517f054184227a07c77bede28af37.png?resizew=271)
11-12九年级·江苏无锡·期末 查看更多[1]
(已下线)2011-2012学年江苏省无锡市后宅中学九年级期末测试数学试卷
更新时间:2019-01-30 18:14:09
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【知识点】 等腰三角形的性质和判定
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解答题-证明题
|
较易
(0.85)
【推荐1】如图,在等腰
中,
,D是
边上任一点,
于E,
交
的延长线于F,
于H,交
于G;求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497846628a41a9bc750a645e045afb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9d0c688e55286443c9974797fc647f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4744b427f036dfbc6db68c87cd5c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048a9f4b2216f310b7cf93b2fc44c841.png)
![](https://img.xkw.com/dksih/QBM/2023/1/1/3143338185859072/3157828664279040/STEM/bbed81727d954c4c897e80ac4e4147d7.png?resizew=168)
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解答题-问答题
|
较易
(0.85)
【推荐2】如图,在
中,
,以B为圆心,BC为半径画弧,交线段AB于点D,以A为圆心,AD为半径画弧,交线段AC于点E,连接CD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/43daeb4a-2474-44dc-b9f2-accd5c964989.png?resizew=158)
(1)若
,求
的度数;
(2)若
,
,求AD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/43daeb4a-2474-44dc-b9f2-accd5c964989.png?resizew=158)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a9afe4b588fccd34b74b0f765a7c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaead91b4b6febfcdd6f995d81e550.png)
您最近一年使用:0次