如图,在正方形纸片
上进行如下操作:
第一步:剪去长方形纸条
;
第二步:从长方形纸片
上剪去长方形纸条
.
若长方形纸条
和
的面积相等,则
的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
第一步:剪去长方形纸条
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c16d99496d31ce4d87301a4793393.png)
第二步:从长方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ddd249d040c36e7316175ac5e1c5f3.png)
若长方形纸条
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c16d99496d31ce4d87301a4793393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ddd249d040c36e7316175ac5e1c5f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-03-31 21:16:25
|
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单选题
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较易
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【推荐1】如图,将长方形
沿对角线
折叠,点C落在点E处,
交
于点F,已知
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/5eeb1cbc-7493-48d3-b401-c354912bdd99.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a962403b752b981f6be542962e37c759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c19410c7abeae002ca97cfad4c791f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/5eeb1cbc-7493-48d3-b401-c354912bdd99.png?resizew=123)
A.32.5° | B.25° | C.50° | D.65° |
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【推荐2】如图,将矩形纸片
沿
折叠,使点
落在对角线
上的点
处.若
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/2021/5/9/2717155558948864/2793152027533312/STEM/2f1a5fdd-2ba1-44d9-8bb8-863501cd6fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6236e0bb1a0169d433e4281a38a95bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2ee75a234ac05a3225e49ddd8c5065.png)
![](https://img.xkw.com/dksih/QBM/2021/5/9/2717155558948864/2793152027533312/STEM/2f1a5fdd-2ba1-44d9-8bb8-863501cd6fab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】下列说法正确的是( )
A.平行四边形的对角线互相平分且相等 |
B.正方形的对角线相等且互相垂直平分 |
C.对角线互相垂直的四边形是菱形 |
D.对角线相等的四边形是矩形 |
您最近一年使用:0次
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【推荐2】下列说法中,错误的是( )
A.平行四边形的对角线互相平分 | B.菱形的对角线互相垂直 |
C.矩形的对角线相等 | D.正方形的对角线不一定互相平分 |
您最近一年使用:0次