如图,D是
的边
延长线上一点,且
,直线
分别交
于E,F.若
,则
( )
![](https://img.xkw.com/dksih/QBM/2021/4/23/2706227020849152/2706880003866624/STEM/803392bf88de439dbf84e7db5623d904.png?resizew=196)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a1bf64ba772922fe58b5322eb4bced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa9a97b08d13208fb383813ab1478fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e631679ce43d4a0ceadc4a8794211546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0ae4cbcb17fb28faf2831933883bf0.png)
![](https://img.xkw.com/dksih/QBM/2021/4/23/2706227020849152/2706880003866624/STEM/803392bf88de439dbf84e7db5623d904.png?resizew=196)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21九年级上·浙江杭州·期末 查看更多[1]
(已下线)【新东方】初中数学1257初三上
更新时间:2021-05-07 18:35:20
|
【知识点】 相似三角形的判定与性质综合
相似题推荐
单选题
|
较易
(0.85)
【推荐1】如图1为一张正三角形纸片
,其中
点在
上,
点在
上.今以
为折线将
点往右折后,
、
分别与
相交于
点、
点,如图2所示.若
,
,
,
,则
的长度为多少?( )
![](https://img.xkw.com/dksih/QBM/2022/6/28/3011055291359232/3011076286595072/STEM/584f4cf972ef4a4b956b2b9db80a7a6c.png?resizew=307)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26ad70d2b3aac8604834d57dfc59bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485a67a1529cdd9ec763cc75b98ac484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275f959037293ca6bd5b0fadf5049456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21b39558cdefc8db7f6b9adb326417c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://img.xkw.com/dksih/QBM/2022/6/28/3011055291359232/3011076286595072/STEM/584f4cf972ef4a4b956b2b9db80a7a6c.png?resizew=307)
A.7 | B.8 | C.9 | D.10 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】D是
的
边上一点,过D作
,交
于E,已知
,那么
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c30e506a480088d2da077839b03bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26f119f277ba1c015f6401045854c6a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/11/dfda1849-ac8c-47ae-adc4-1a88b3acfe46.png?resizew=127)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次