如图,已知四边形
是平行四边形,E,F是对角线
上两点,且
.求证:
.
![](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/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
更新时间:2024-05-08 10:21:55
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
中,
,底边上的高
,E是
中点.P是
上一点,连接
,将
绕点E逆时针旋转
交
的延长线于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/91104c19-2676-413b-ab00-a76619b7536c.png?resizew=221)
(1)若
,则
°;
(2)若P为
的中点,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350c737650ed72d832be9527b931f392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/91104c19-2676-413b-ab00-a76619b7536c.png?resizew=221)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c427d63a92a7a34b692220bbcfd3172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72eaabe37ba4f494de1d0a0769dc07a8.png)
(2)若P为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddf4060d47d069e2987ab8fc73383fb.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,在Rt△ABC中,∠ACB=90°,∠A=22.5°,斜边AB的垂直平分线交AC于点D,点F在AC上,点E在BC的延长线上,CE=CF,连接BF,DE.则线段DE和BF在数量和位置上有什么关系?请说明理由.
![](https://img.xkw.com/dksih/QBM/2017/3/15/1644437786361856/1665129159671808/STEM/36c0863b-7230-4483-a951-193b2b0a2ff9.png?resizew=260)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,四边形ABCD是平行四边形,DE交BC于点F,交AB的延长线于点E, 且∠EDB=∠C.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899082406412288/2899927094788096/STEM/8fd48278-ba88-4304-a981-487b599fe432.png?resizew=247)
(1)求证:△ADE∽△DBE;
(2)若DC=10cm,BE=18cm,求DE的长.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899082406412288/2899927094788096/STEM/8fd48278-ba88-4304-a981-487b599fe432.png?resizew=247)
(1)求证:△ADE∽△DBE;
(2)若DC=10cm,BE=18cm,求DE的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,以□ABCD的顶点A为圆心,AB为半径作⊙A,分别交
,
于E,F两点,交BA的延长线于点G.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775bc42a218a899f6fd1f998bf88ba26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/7c5e725c-6cb4-4462-81ed-6f8fd8b2d56f.png?resizew=192)
您最近一年使用:0次