具备下列条件的
中,不为直角三角形的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2021-09-22 14:26:01
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【知识点】 直角三角形的两个锐角互余解读
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较易
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【推荐1】如图,BC⊥AE于点C,CD∥AB,∠B=55°,则∠1等于( )
![](https://img.xkw.com/dksih/QBM/2019/3/12/2158735091818496/2159381133746177/STEM/f14058445dd84622a7e173c0a0592409.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/2019/3/12/2158735091818496/2159381133746177/STEM/f14058445dd84622a7e173c0a0592409.png?resizew=113)
A.35° | B.45° | C.55° | D.65° |
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【推荐2】将一个直角三角板和一把直尺如图放置,如果
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/7f0a6a8f-17e5-44c6-a4bb-22bfc939308f.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8104cc8127e4b1966cae70981ada89a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95b81783c744b740f5651a305809d87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/7f0a6a8f-17e5-44c6-a4bb-22bfc939308f.png?resizew=130)
A.43° | B.47° | C.30° | D.45° |
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