如图,在△ABC中,CD为AB边上的中线,过点A作CD的垂线交CD的延长线于点E,过点B作BF⊥CD于点F.若△ACE的面积为12,△ADE的面积为3,则△BCF的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/1/11/2899231537192960/2960950680920064/STEM/08f01419-2fcd-4a77-9d9e-89a7feaebf76.png?resizew=193)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2899231537192960/2960950680920064/STEM/08f01419-2fcd-4a77-9d9e-89a7feaebf76.png?resizew=193)
A.9 | B.6 | C.4.5 | D.3 |
21-22八年级上·贵州遵义·期末 查看更多[2]
贵州省遵义市播州区2021-2022学年八年级上学期期末数学试题(已下线)专题4.16 三角形全等几何模型(一线三直角)(基础练)-2023-2024学年七年级数学下册基础知识专项突破讲与练(北师大版)
更新时间:2022-04-18 18:52:29
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【推荐1】如图,在
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【推荐2】下列说法中,正确的是( )
A.三角形的一个外角大于任何一个内角 |
B.三角形中,到三边距离相等的点是这个三角形三条边的中线的交点 |
C.三角形的三条高、三条角平分线、三条中线都在三角形内 |
D.三角形的一条中线把三角形分成面积相等的两个三角形 |
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