如图,将矩形
沿
折叠,连接
使得点
的对应点
落在
上.
![](https://img.xkw.com/dksih/QBM/2019/5/7/2198475417903104/2198506754252800/STEM/e67878028ddf40e883899547f6a7ae02.png?resizew=182)
(1)求证:
.
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/2019/5/7/2198475417903104/2198506754252800/STEM/e67878028ddf40e883899547f6a7ae02.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5bfd03407752f23272f2b12b3a82b1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5181b97a7e43959b8455680157c3b644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d19f963f7c803bcfcbb265ec6d4304.png)
更新时间:2019-05-07 13:36:21
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,将长方形
沿直线
折叠.顶点
恰好落在
边上
点处,已知
,
.
![](https://img.xkw.com/dksih/QBM/2020/10/27/2579972473765888/2580616265777152/STEM/8087c0afb07440fa9056aa977f7a56a9.png?resizew=176)
(1)求图中阴影部分的面积.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5685b5efd9b3e33abf949807045e6023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d65a67cc84189f659d136294a63f7c.png)
![](https://img.xkw.com/dksih/QBM/2020/10/27/2579972473765888/2580616265777152/STEM/8087c0afb07440fa9056aa977f7a56a9.png?resizew=176)
(1)求图中阴影部分的面积.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】在矩形纸片
中,将矩形纸片折叠,使点
与点
重合,折痕交
于
点,交
于
点.
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07841ed8d7ded4bd7533e1d0fae931d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f142d6f88beb4a288dcbc0b3e674326.png)
您最近一年使用:0次