一副三角尺如图放置,两三角尺的斜边互相平行,每个三角尺的直角顶点都在另一个三角尺的斜边上,图中
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-09 20:38:39
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【推荐1】如图,将一副三角板的直角顶点重合,且使
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/6cd59845-8477-40d4-acd2-d5be6488d471.png?resizew=195)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6beda2518cf76da94d7ec9a813dcfa82.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/6cd59845-8477-40d4-acd2-d5be6488d471.png?resizew=195)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】一副三角尺按如图所示位置放置,
为公共边,量角器中心与点
重合,
为
刻度线.如果三角尺一边
与
刻度线重合,那么边
与下列刻度线重合的是( )
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896575630786560/2926392662368256/STEM/313b8e04-60de-4b59-935f-92ebe9685909.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58516359e5558a19f346198a9a108d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0468237bbc0d3df77435d98b817c10c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896575630786560/2926392662368256/STEM/313b8e04-60de-4b59-935f-92ebe9685909.png?resizew=222)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,直线
的直角顶点
落在直线
上,点
落在直线
上,其中
,若直线
恰好平分
则
的度数为( )
![](https://img.xkw.com/dksih/QBM/2020/8/24/2534969440763904/2540976869326848/STEM/6e055d987f8a4af99a0948d5b4a26afb.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b7d93cd9cfb718d7ebb896cba1ab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a382d705bf6eaf5cdb85edf1c63f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d6b644b32f70a646ee84c77c965516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63433f9c352cd4b3f8515265b56608d.png)
![](https://img.xkw.com/dksih/QBM/2020/8/24/2534969440763904/2540976869326848/STEM/6e055d987f8a4af99a0948d5b4a26afb.png?resizew=156)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】如图,在
中
,
,E是
角平分线
延长线上一动点(不与F的重合),过E点作
于D点,当E点运动时
的度数( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/4f785282-05a8-4831-b511-c9806112bbd2.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282836891c171f38f62306a52106fd32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8daff96303a07819bd4ee47731e73b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/4f785282-05a8-4831-b511-c9806112bbd2.png?resizew=184)
A.随E点运动而变化,离F点越近,度数越大; |
B.随E点运动而变化,离F点越远,度数远大; |
C.度数不变,为![]() |
D.度数不变,为![]() |
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【推荐1】如图,将三角尺的直角顶点放在直尺的一边上,∠1=30°,∠2=50°, 则
的度数等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605f2976297a0deaa1602ef09d6a5afa.png)
A.50° | B.30° | C.20° | D.15° |
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【推荐2】如图,圆内接正九边形两条对角线
相交,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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