如图,在Rt
ABC中,∠ACB=90°,∠A=40°,以B为圆心,BC长为半径画弧,交AB于点D,连接CD,则∠ACD的度数是( )
![](https://img.xkw.com/dksih/QBM/2022/1/11/2892271392899072/2944697069944832/STEM/6988f16a-0419-416f-a190-f5256514b631.png?resizew=99)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2892271392899072/2944697069944832/STEM/6988f16a-0419-416f-a190-f5256514b631.png?resizew=99)
A.25° | B.35° | C.45° | D.55° |
更新时间:2022-03-26 19:44:26
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【推荐1】如图,在
中,
,以点B为圆心,
的长为半径画弧,交
于点D,连接
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】三角板
(其中
,
)和三角板
(其中
,
)按照如图所示的位置摆放,点
在边
上,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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【推荐1】如图,平行四边形
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【推荐2】如图,在
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,
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