如图,在正方形
中,
是
的中点,阴影部分的面积是
,则正方形
的边长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/299b464f-3dcb-4733-adc0-1c62ab7ac19f.png?resizew=122)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-11-17 04:43:33
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【推荐1】将两张全等的等腰直角三角形纸片
与
和一张正方形纸片
按照如图所示的方式拼成一个平行四边形
,同时形成了剩余部分(即
,
,
,
),若只知道阴影部分的面积,则不能直接求出( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370abdf35cb8817d35b78eea892731ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000bdb210e2adcc4b5d45542a58e612f.png)
A.![]() |
B.![]() |
C.平行四边形![]() |
D.剩余部分的面积之和与正方形![]() |
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【推荐2】如图,在正方形
外取一点
,连接
,
,
,过点
作
的垂线交
于点
.若
,
,下列结论:①
;②点
到直线
的距离为
;③
;④
;⑤
.其中正确结论的序号是( ).
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239484799680512/2239627185176576/STEM/0e289fb1dda34bffbc231486abcf4e89.png?resizew=119)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75442b7bf8c6fd320714be54e90a266.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd94ce5e3c9daeb9129d945a45a953e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bd025e6dc18530a81ee3c9a033561b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37b35fe83d5ea57715b78ae1cf832fc.png)
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239484799680512/2239627185176576/STEM/0e289fb1dda34bffbc231486abcf4e89.png?resizew=119)
A.①③④ | B.①②⑤ | C.③④⑤ | D.①③⑤ |
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名校
【推荐1】如图,正方形
中,E为
的中点,
于G,延长
交
于点F,延长
交
于点H,交
于N,下列结论:①
;②
;③
;④
;⑤
;其中正确结论的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/d80f288d-fe87-44d3-a6a5-8aed0ac9a06d.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0565bafba84b317d92ac6855ab1c3468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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A.2个 | B.3个 | C.4个 | D.5个 |
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【推荐2】如图,在△ABC中,
,以AB为直径的⊙O交AC于点D.过点C作
,在CF上取一点E,使
,连接AE.对于下列结论:①
;②△CBA∽△CDE;③
;④AE为⊙O的切线,正确的结论是( )
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895572451368960/2952465850073088/STEM/790ff05e-3829-40b3-824a-6a921720023e.png?resizew=145)
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A.①② | B.①④ | C.①②③ | D.①②④ |
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