如图,E是
的边
延长线上一点,连接
,交
于点F,连接
,
,则
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/26/88cf9c32-4c51-45bf-b9d9-adc9e59482d0.png?resizew=223)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aed492885dee789ddafcc689af82b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a7f39798516ee4799840dde534bbff.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
22-23九年级上·山东济宁·期末 查看更多[5]
山东省济宁市泗水县2022-2023学年九年级上学期期末数学试题鲁教版八年级下册第九章图形的相似单元测试数学试题第二十五章 图形的相似 25.5 相似三角形的性质冀教版九年级上册课前预习(已下线)清单15 相似三角形的性质与判定(3个考点梳理+17种题型解读+提升训练)-2023-2024学年九年级数学上学期期末考点大串讲(苏科版)安徽省淮北市五校联考2023-2024学年九年级上学期开学考试数学试题
更新时间:2023-03-20 14:46:43
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【推荐1】如图,在平行四边形
中,以点
为圆心,
长为半径画弧交
于点
,再分别以点
、
为圆心,大于
的相同长为半径画弧,两弧交于点
,连接
并延长交
于点
,连接
.根据以上尺规作图的过程,小明得到下列结论:①
平分
②
是等边三角形 ③
④
,其中,结论正确的有( )个
![](https://img.xkw.com/dksih/QBM/2022/7/5/3015935891800064/3023655680057344/STEM/474fbbd95d2549039429e407e77cc216.png?resizew=214)
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【推荐2】如图,CE是平行四边形ABCD的边AB的垂直平分线,垂足为点O,CE与DA的延长线交于点E,连接AC、BE、DO,且DO与AC交于点F.则下列结论:①四边形ACBE是菱形;②∠ACD=∠BAE;③AF∶AD=2∶5;④S四边形AFOE∶S△COD=2∶3.其中结论正确的有( )
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【推荐1】已知△ABC和△ADE都是等腰直角三角形,∠BAC=∠ADE=90°,如图所示放置,边AE,AD与BC交于点M,N.则图中一定相似的三角形有( )对.
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