如图,在矩形
中,E,F分别是
,
上的点,若
,则一定有( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/4093f2cb-4f1c-4a33-82e8-5f23c9ace846.png?resizew=108)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521601ac1fbc4a52d4fe44be9c8e88c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/4093f2cb-4f1c-4a33-82e8-5f23c9ace846.png?resizew=108)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-11-30 22:09:54
|
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【推荐1】如图所示,矩形ABCD中,AE平分∠BAD交BC于E,∠CAE=15°,则下面的结论:①△ODC是等边三角形;②BC=2AB;③S△AOE=S△COE,其中正确结论有( )
![](https://img.xkw.com/dksih/QBM/2021/7/23/2770190597570560/2830771028918272/STEM/dad3b10cdf354dd88a842380aa214e17.png?resizew=150)
![](https://img.xkw.com/dksih/QBM/2021/7/23/2770190597570560/2830771028918272/STEM/dad3b10cdf354dd88a842380aa214e17.png?resizew=150)
A.0个 | B.1个 | C.2个 | D.3个 |
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【推荐2】如图,在平面直角坐标系xOy中, 四边形ABCD是矩形,点A的坐标为(4,0),顶点C在反比例函数y=
的图像上,若 AO:OB=1:2且 AD:AB=1:2,则k的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/12/1204efc7-824b-499e-ac9c-2c15f17b0f13.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/12/1204efc7-824b-499e-ac9c-2c15f17b0f13.png?resizew=166)
A.32 | B.35 | C.40 | D.42 |
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真题
【推荐1】如图,在
中,
,
.动点
分别在直线
上运动,且始终保持
.设
,
,则
与
之间的函数关系用图象大致可以表示为( )
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/9540084b79c44505896cec3e396fe3a9.png?resizew=187)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/9bc7b3da51b647e6b6fc2e78d417b0a2.png?resizew=52)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/5909977a702b44b3b6fd6d01fc82c331.png?resizew=89)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/b21e1d3101da44aa9474f23c467d3f27.png?resizew=84)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/5c8710f326c04ca69350075d9c130f4f.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/8f52eb87a1ce4791b98b0a00c9cf05f1.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/4fd90740f6c74adf97825939674cbb27.png?resizew=91)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/1df26da68dc643d1b73be43409ee8697.png?resizew=49)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/246fe917e54641c5a2b042016e9493ca.png?resizew=52)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/0cec9b95f757472a854eba99e254b3bd.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/f04a646103e64afc99556fb194774edf.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2012/9/12/1574336046727168/1574336457408512/STEM/9540084b79c44505896cec3e396fe3a9.png?resizew=187)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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【推荐2】下列说法正确的是( )
A.对角线垂直且相等的四边形是正方形 | B.对角线相等且互相平分的四边形是菱形 |
C.顶角相等的两个等腰三角形相似 | D.两边成比例且一角相等的两个三角形相似 |
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