如图,在正方形ABCD中,E为AB边上一点,
于点G,若已知下列三角形面积,则可求阴影部分面积和的是( )
![](https://img.xkw.com/dksih/QBM/2022/4/13/2962134696165376/2989288030560256/STEM/d7233444-387a-4bff-b79b-d52c8b5741cb.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbfc35fc915ac7d4dc017e60ccdecbe.png)
![](https://img.xkw.com/dksih/QBM/2022/4/13/2962134696165376/2989288030560256/STEM/d7233444-387a-4bff-b79b-d52c8b5741cb.png?resizew=147)
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更新时间:2022-05-28 19:44:58
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【推荐1】如图,在
中,
的角平分线
交
于
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3f146eca5f2917e812c361f67a45e7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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【推荐2】如图,△ABC中,BD、BE分别是高和角平分线,点F在CA的延长线上,FH⊥BE,交BD于点G,交BC于点H .下列结论:
①∠DBE=∠F;②∠F=∠BAC-∠C;
③2∠BEF=∠BAF+∠C;④∠BGH=∠ABE+∠C.其中正确的有( )
![](https://img.xkw.com/dksih/QBM/2018/10/15/2054027613716480/2057495381696512/STEM/951c347ff68047798f80de060192e3a1.png?resizew=162)
①∠DBE=∠F;②∠F=∠BAC-∠C;
③2∠BEF=∠BAF+∠C;④∠BGH=∠ABE+∠C.其中正确的有( )
![](https://img.xkw.com/dksih/QBM/2018/10/15/2054027613716480/2057495381696512/STEM/951c347ff68047798f80de060192e3a1.png?resizew=162)
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【推荐1】如图,长方形纸片
,
,
,点
在
边上,将
沿
折叠,点
落在
处,
,
分别交
于点
,
,且
,则
的长为( ).
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【推荐2】如图,在平面直角坐标系中,等腰直角三角形ABC的直角顶点A的坐标为(2,0),顶点B的坐标为(0,1),顶点C在第一象限,若函数y=
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![](https://img.xkw.com/dksih/QBM/2019/1/7/2113498073497600/2115835686174721/STEM/7731d991ca0742afbaf207f661c1f8ef.png?resizew=177)
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【推荐1】如图,正方形
内接于
,E为
的中点,直线
交
于点F,如果
的半径为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
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【推荐2】如图,四边形
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