1 . 如图,四边形ABCD是由四个全等的直角三角形拼成.若四边形ABCD的面积为13,中间空白处的四边形EFGH的面积为1,直角三角形的两条直角边分别为a和b,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/f808f737-2ac1-4002-bb8d-cd205065a721.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73535eacf88079e8a713a5454750e51.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/f808f737-2ac1-4002-bb8d-cd205065a721.png?resizew=178)
A.12 | B.13 | C.24 | D.25 |
您最近一年使用:0次
2 . 如图,在正方形ABCD中,对角线AC,BD相交于点O,E为OC上的动点(不与O,C重合),作
,垂足为G,分别交BC,OB于F,H,连接OG,CG.下列结论:①
;②GO平分
;③
;④
,其中正确结论的题号是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/77012511-25c5-47a0-9393-e68d7635fc84.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ed13a7bd532bd39af5e5ad7493a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb884980cf4a6fd4d48a4b6e2d480739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec88884321733714de9db5466629ccf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78e4b9db01e69b0974edb11bc4737f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb4ade25694909f464d7b0cf8f74ecd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/77012511-25c5-47a0-9393-e68d7635fc84.png?resizew=160)
A.①③④ | B.①②③ | C.①②④ | D.①②③④ |
您最近一年使用:0次
2022高一·全国·专题练习
3 . 如图,在正方形ABCD中,E为AB边上一点,
于点G,若已知下列三角形面积,则可求阴影部分面积和的是( )
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003467663425536/3006275857776640/STEM/0b0752fbb3744c808d947772ac9fa2fe.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbfc35fc915ac7d4dc017e60ccdecbe.png)
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003467663425536/3006275857776640/STEM/0b0752fbb3744c808d947772ac9fa2fe.png?resizew=147)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022高一·全国·专题练习
4 . 正方形
,
,
,
按如图所示的方式放置,点
,
,
,
在直线
上,点
,
,
,
在x轴上,已知点
是直线
与y轴的交点,则
的纵坐标是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/a8c1a9cb-2095-453d-86ae-ef47e5f6b6a8.png?resizew=324)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551d9dbea6e2147f1a626e58ce6e871c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e90dc669b9929e5857a5bba95d6ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0e0792b07debc56815a70f536c7c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2857fac4963b129d99e79dcb3e13d295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/148769cd355e427616fd91c6bc7e347a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/a8c1a9cb-2095-453d-86ae-ef47e5f6b6a8.png?resizew=324)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022高一·全国·专题练习
5 . 如图是一款手推车的平面示意图,其中AB∥CD,
,
,那么
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/62e5fe01-42bb-4409-a54d-545b43084137.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a580ca102044f83a4565c35c7866a013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90bbd553684a3d6adffbefa17d8ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/62e5fe01-42bb-4409-a54d-545b43084137.png?resizew=201)
A.100° | B.132° | C.142° | D.154° |
您最近一年使用:0次
2022高一·全国·专题练习
6 . 下列说法错误的是( )
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2022高一·全国·专题练习
7 . 如图,在
中,
,AC=BC,AB=4cm,CD是中线,点E、F同时从点D出发,以相同的速度分别沿DC、DB方向移动,当点E到达点C时,运动停止,直线AE分别与CF、BC相交于G、H,则在点E、F移动过程中,点G移动路线的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/f151ed4c-fce4-4d8a-aa31-465ef1a4384a.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/f151ed4c-fce4-4d8a-aa31-465ef1a4384a.png?resizew=184)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022高一·全国·专题练习
8 . 如图,点O是△ABC的外心(三角形三边垂直平分线的交点),若∠BOC=96°,则∠A的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/2a7ef7db-fc9d-40b5-8913-00c3e4a2e50f.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/22/2a7ef7db-fc9d-40b5-8913-00c3e4a2e50f.png?resizew=158)
A.49° | B.47.5° | C.48° | D.不能确定 |
您最近一年使用:0次
2022高一·全国·专题练习
9 . 如图,⊙I是Rt△ABC中的内切圆,
,过点I作
分别交CA,CB于E,F,若EA=4,BF=3,则⊙I的半径是( )
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003467565973504/3006127130386432/STEM/7c540845d42b47f5841890bea7479003.png?resizew=253)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003467565973504/3006127130386432/STEM/7c540845d42b47f5841890bea7479003.png?resizew=253)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次