如图,直线
,直线c与直线的a、b分别相交于点A,B,
,垂足为D,若
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a4352562ae8aa968014fd0d931b677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b8979269883fdaed411408bd34b993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd7c9738638e8868efa7dee27ffb44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/f0e81536-2680-4de3-93dd-ef9a3a58c793.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-08-27 17:20:52
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【推荐1】下列命题是真命题的是( )
A.在同一平面内,过一点有且只有一条直线与已知直线垂直 |
B.过一点有且只有一条直线与已知直线平行 |
C.两条直线被第三条直线所截,同位角相等 |
D.垂直于同一条直线的两条直线互相平行 |
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【推荐2】如图,AC∥DF,AB∥EF,点D、E分别在AB、AC上,若∠2=50°,则∠1的大小是
![](https://img.xkw.com/dksih/QBM/2013/9/28/1573688260272128/1573688265457664/STEM/382cbeecb36147a7ae68c560d6e68b79.png)
![](https://img.xkw.com/dksih/QBM/2013/9/28/1573688260272128/1573688265457664/STEM/382cbeecb36147a7ae68c560d6e68b79.png)
A.30° | B.40° | C.50° | D.60° |
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【推荐1】如图,在
中,
,
,点D在
的延长线上,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/970925b8-6041-40c7-b0cd-3bb8def1e336.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b8a4b0e72a4de1da975168b243a325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d365cc7ce9022654091eee60bc1c2b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18444ec3e5e3b8a0cf488732c34866d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/970925b8-6041-40c7-b0cd-3bb8def1e336.png?resizew=166)
A.4 | B.5 | C.6 | D.7 |
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【推荐2】如图,在
中,
,
,
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cdc5c5356ec37800b9e71ee1ad5cca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c93faa14b0945cebea57ce17ea059d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c219d82e5a081750b88cfd913f01b667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
A.1.5 | B.2 | C.3 | D.4 |
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