如图,已知直线
,点C,A分别在直线
上,以点C为圆心、
长为半径画弧,交直线
于点B,连接
.若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027830fc47290062692964077ee481e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8330986c546cc1b4c6c303e14e1d0d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-03-22 18:39:16
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【推荐1】如图所示,直线
,
,
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/2021/3/4/2670835229450240/2674900231151616/STEM/5a682203-9d23-4939-8be7-b9d4486da026.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff4e42856fa5f6a4e12993e53b065e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54ccc7d2f8af35a252977d6e2af4663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec38b09a7125c2ee9153314c2cc6dff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
![](https://img.xkw.com/dksih/QBM/2021/3/4/2670835229450240/2674900231151616/STEM/5a682203-9d23-4939-8be7-b9d4486da026.png?resizew=136)
A.120° | B.130° | C.140° | D.150° |
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【推荐2】将一条两边平行的纸带按如图所示方式折叠,若
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3b2e1d52848a85104edcd69251d42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,直线
,点A,B分别在MN,PQ上,
,过线段AB上的点C作
,交PQ于点D,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/484683e5-985c-4939-bb90-01d98c3acd2d.png?resizew=218)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947aed0181a8c0bd81c6ebeba8d1ddc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910b003f057979016542a42434fc942b.png)
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A.47° | B.57° | C.67° | D.77° |
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【推荐2】
的三个内角满足下列条件:①
;②
;③
.其中能判定
是直角三角形的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e597138bc1ed3f80e3d4c5cc736584b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9cbdc53ad66af38c89c7a93965258d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae88683f0d47128c1d43fc03d09e634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.①②③ | B.② | C.①③ | D.②③ |
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【推荐1】如图,在△ABC中,∠BAC=80°,D,E为BC上的两个点,且AB=BE,AC=CD,则∠DAE的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/2/5/2909757728251904/2913952335273984/STEM/26371b25-4c23-4efb-bbca-73ef3e47f859.png?resizew=178)
![](https://img.xkw.com/dksih/QBM/2022/2/5/2909757728251904/2913952335273984/STEM/26371b25-4c23-4efb-bbca-73ef3e47f859.png?resizew=178)
A.40° | B.45° | C.50° | D.60° |
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【推荐2】如图A、
、
是
上的三点,
是劣弧
的中点,
,则
的度数等于( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/6453cfcc-c272-48d0-83ee-83490ce24021.png?resizew=127)
A.![]() | B.![]() | C.![]() | D.![]() |
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