如图,已知点B,D在AC的两侧,E,F分别是△ACD与△ABC的重心,且EF=2,则BD的长度是( )
![](https://img.xkw.com/dksih/QBM/2019/12/5/2348437002469376/2348582882844672/STEM/f6727ea2b31543ef8b215a9ccf30ae5a.png?resizew=137)
![](https://img.xkw.com/dksih/QBM/2019/12/5/2348437002469376/2348582882844672/STEM/f6727ea2b31543ef8b215a9ccf30ae5a.png?resizew=137)
A.4 | B.5 | C.6 | D.7 |
更新时间:2019-12-05 14:27:01
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【知识点】 重心的有关性质
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【推荐1】如图,AD是△ABC的一条中线,G是△ABC的重心,过点G作EF∥BC,交AB,AC于点E,F.若BC=6,则EG的长为( )
![](https://img.xkw.com/dksih/QBM/2021/6/24/2749650146459648/2799333681577984/STEM/5b5627a7-e2e4-45a8-a6cd-6785c564fa63.png)
![](https://img.xkw.com/dksih/QBM/2021/6/24/2749650146459648/2799333681577984/STEM/5b5627a7-e2e4-45a8-a6cd-6785c564fa63.png)
A.2 | B.3 | C.3.5 | D.4 |
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【推荐2】如图,在
中,G是三角形的重心,
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f3fd544f62edfd6caf6508dbcab4f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/4add0712-3525-4204-b07e-1ea3ba2271af.png?resizew=149)
A.6 | B.10 | C.8 | D.12 |
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