如图,四边形
为平行四边形,
,
,
相交于点
.设
和
的面积分别为
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28670066048294505327160c14c0bba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb131720fd5c1cdbb14bbecf0425f98b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86e2d4453ef26938345402861463937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8369f29cead300793e654575c0fb6a3.png)
A.1:2 | B.1:3 | C.4:9 | D.1:4 |
更新时间:2023-01-09 23:13:45
|
【知识点】 相似三角形的判定与性质综合
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【推荐1】如图,在△ABC中,点D,E分别在AB,AC上,若DE
BC,
=
,DE=6cm,则BC的长为( )
![](https://img.xkw.com/dksih/QBM/2022/10/11/3085436804218880/3088128701456384/STEM/b1855c45effa4edf95472ab9a2fc81d2.png?resizew=104)
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![](https://img.xkw.com/dksih/QBM/2022/10/11/3085436804218880/3088128701456384/STEM/b1855c45effa4edf95472ab9a2fc81d2.png?resizew=104)
A.9cm | B.12cm | C.15cm | D.18cm |
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【推荐2】如图,在△ABC中,D、E分别为AB、AC边上的点,DE∥BC,点F为BC边上一点,连接AF交DE于点G,则下列结论中一定正确的是( )
![](https://img.xkw.com/dksih/QBM/2019/3/12/2158897793556480/2159575661379584/STEM/0dd3197248c24a3f82490ac2ba81ee69.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2019/3/12/2158897793556480/2159575661379584/STEM/0dd3197248c24a3f82490ac2ba81ee69.png?resizew=151)
A.![]() | B.![]() | C.![]() | D.![]() |
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