如图,△ABC中,点E是BC上的一点,EC=2BE,BD是AC边上的中线,若△ABC的面积S△ABC=24,则S△ADF﹣S△BEF=__ .
![](https://img.xkw.com/dksih/QBM/2019/5/27/2212590708801536/2213472766664704/STEM/cfffb9f3a03e490c9ec1348f300f6f82.png?resizew=171)
更新时间:2019-05-29 23:43:35
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【推荐1】如图,直线MN分别与直线AB,CD相交于点E,F,EG平分∠BEF,交直线CD于点G,若∠MFD=∠BEF=62°,射线GP⊥EG于点G,则∠PGF的度数为__ 度.
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【推荐2】如图,平面直角坐标系中
,
,
,将直线
平移交坐标轴于C、D点,
平分
,
平分
,过点B作
交
的延长线于点N,下列结论中:①
;②
平分
;③点O到
的距离等于点O到
的距离,都等于
;④延长
交
于点Q,则
.其中正确的有______ .
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【推荐1】如图,
是
的中位线,F是
的中点,
的延长线交
于点G,若
的面积为
,则
的值为_______
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
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【推荐2】若一个三角形的三条中位线长分别是6cm、8cm、10cm,则这个三角形的面积是_____ cm2.
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