将一个直角三角板和一把直尺按如图所示摆放,若
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/2023/5/5/3231069329850368/3233872415186944/STEM/20524258c1424cb089130d3376acfa23.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619966af5abba968962c958a9facb22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/2023/5/5/3231069329850368/3233872415186944/STEM/20524258c1424cb089130d3376acfa23.png?resizew=172)
A.![]() | B.![]() | C.![]() | D.![]() |
22-23七年级下·浙江温州·阶段练习 查看更多[2]
更新时间:2023-05-09 09:13:10
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【推荐1】用一副三角板可以画出一些指定的角,下列各角中,不能用一副三角板画出的是( )
A.15° | B.75° | C.85° | D.105° |
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【推荐2】将一把直尺和一块含有
角的直角三角板按如图所示方式放置,直角三角板的一个顶点在直尺一边上,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab3b50c9bb089bfeda6b0a7d6807fbb.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,
,点
在
边上,已知
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/75d240e6-25f3-4488-8648-305cbf2be55c.png?resizew=187)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,AB、CD、EF相交于点O,且CD⊥AB,那么∠1和∠2的关系是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/3a11b879-87d6-46d2-8357-87f854f54e90.png?resizew=192)
A.∠1+∠2=180° | B.∠1+∠2=90° | C.∠1=∠2 | D.无法确定 |
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【推荐1】如图,直线
,正五边形ABCDE的顶点A,B分别落在
,
上.若
,则∠2的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/ec5845a6-a1d2-404c-a757-182dfda391ca.png?resizew=158)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98b0460266aa3c97f024009cbed4602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce619c464f2aa04178ea0111ba60544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d9ccc4246c82939d8a659db9f28a87.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/ec5845a6-a1d2-404c-a757-182dfda391ca.png?resizew=158)
A.60° | B.61° | C.62° | D.65° |
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【推荐2】如图,直线
,直线
与
,
分别相交于
,
两点,
交
于点
,
,
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/16/cb07331b-26e0-4791-abae-6201bc6aef26.png?resizew=209)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a4352562ae8aa968014fd0d931b677.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/16/cb07331b-26e0-4791-abae-6201bc6aef26.png?resizew=209)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】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)
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A.1.5 | B.2 | C.3 | D.4 |
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【推荐2】如图,在
ACE中,点D在AC边上,点B在CE延长线上,连接BD,若∠A=47°,∠B=55°,∠C=43°,则∠DFE的度数是( )
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A.125° | B.45° | C.135° | D.145° |
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