如图,四边形
、
、
都是正方形.
求证:
;
求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779c26a41987ef67c2f09812c4f15ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89029e1d782dbf6a0bda8605a7c5ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8b89799946f9c68d5575b0c6a6affc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee3c84dcd732d8923c51e8bfed7bf97.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/1d285e18-9b3c-4e82-93b1-45aaa2fc125d.png?resizew=245)
更新时间:2018-10-17 16:01:02
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,
,点
,
分别在
,
上,D为
的中点,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348216467fda035329fe8fac46b39911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002767b8780fc8bf7aafc7beb2bae1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10e920866721a989bfea0f1c3e704d0.png)
![](https://img.xkw.com/dksih/QBM/2023/2/22/3180231528513536/3180897075101696/STEM/95e5fa4141eb456ca6d16ce03203caf5.png?resizew=154)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】已知在等腰△ABC中,AB=AC,在射线CA上截取线段CE,在射线AB上截取线段BD,连接DE,DE所在直线交直线BC与点M.请探究:
(1)如图(1),当点E在线段AC上,点D在AB延长线上时,若BD=CE,请判断线段MD和线段ME的数量关系,并证明你的结论.
(2)如图(2),当点E在CA的延长线上,点D在AB的延长线上时,若BD=CE,则(1)中的结论还成立吗?如果成立,请证明;如果不成立,说明理由;
(3)如图(3),当点E在CA的延长线上,点D在线段AB上(点D不与A,B重合),DE所在直线与直线BC交于点M,若CE=2BD,请直接写出线段MD与线段ME的数量关系.
(1)如图(1),当点E在线段AC上,点D在AB延长线上时,若BD=CE,请判断线段MD和线段ME的数量关系,并证明你的结论.
(2)如图(2),当点E在CA的延长线上,点D在AB的延长线上时,若BD=CE,则(1)中的结论还成立吗?如果成立,请证明;如果不成立,说明理由;
(3)如图(3),当点E在CA的延长线上,点D在线段AB上(点D不与A,B重合),DE所在直线与直线BC交于点M,若CE=2BD,请直接写出线段MD与线段ME的数量关系.
![](https://img.xkw.com/dksih/QBM/2015/4/13/1578635732639744/1578635733139456/STEM/a31444a8-f705-4ac1-857f-0f68c30a0f03.png?resizew=422)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,M,N是以AB为直径的⊙O上的点,且弧AN=弧BN,BM平分∠ABD,MC⊥BD于点C.
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363226962518016/2363713178517504/STEM/2d062ebc28724263a692dcc8f775b356.png?resizew=131)
(1)求证:MC是⊙O的切线.
(2)若BC=2,MC=4,求⊙O的直径.
(3)在(2)的条件下,求阴影部分的周长.
![](https://img.xkw.com/dksih/QBM/2019/12/26/2363226962518016/2363713178517504/STEM/2d062ebc28724263a692dcc8f775b356.png?resizew=131)
(1)求证:MC是⊙O的切线.
(2)若BC=2,MC=4,求⊙O的直径.
(3)在(2)的条件下,求阴影部分的周长.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知,如图,直线
与x轴、y轴分别相交于A、B两点,与双曲线
在第一象限内交于点C,
.
(1)求
;
(2)求k的值;
(3)D是双曲线
上一点,
垂直x轴于E,若以O、D、E为顶点的三角形与
相似,试求点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60161cb19449c57e7c7ffc7aa9f02b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451c7c3e09c57d1b651e639219ec14ed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/17/5bf2819e-b6e3-4338-ba55-9eb9c997a069.png?resizew=162)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
(2)求k的值;
(3)D是双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次