一副三角板按如图所示摆放,其中
,
,
点B在边
上,点D在边
上,
与
相交于点G,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb3842c3a43c35e0762d06f6c97b6c1.png)
____________ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b325607c1aee1060960894445cd3f6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d35d8d8bb0dc17f2f86fe5b230a2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4ea9ffbbabd6b5c90e4678c15bb1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a11be1dce47ca9df1e6999b55c4917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb3842c3a43c35e0762d06f6c97b6c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/e7d0085a-9dad-427c-8ef2-a60c1ab5a50a.png?resizew=172)
更新时间:2023-02-16 11:44:17
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【推荐1】如图,将一副三角尺按图中所示位置摆放,点F在AC上,其中∠ACB=∠EFD=90°,∠ABC=60°,∠DEF=45°,AB∥DE,则∠AFD的大小为___________ 度.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/92970e9c-091d-413f-be38-1493bca5ecf9.png?resizew=172)
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【推荐2】将三角板
的直角顶点O放置在直线
上(如图),若
,射线
平分
,则
的大小为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de637684e60a7429aba11639aacb9dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/ab1f61ff-0de1-4a0d-aae5-849b406bbc53.png?resizew=155)
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【推荐1】如图1是一个消防云梯,其示意图如图2所示,此消防云梯由救援台
,延展臂
(
在
的左侧),伸展主臂
,支撑臂
构成,在操作过程中,救援台
,车身
及地面
三者始终保持平行.当
,
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
______ 度;如图3,为了参与一项高空救援工作,需要进行调整,使得延展臂
与支撑臂
所在直线互相垂直,且
,则这时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
______ 度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2244061127bf5b1abdb9d3a05a737780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbff70350b027ad98dd2038111e4c92e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596a7d815faf75dd986d60e5eb313e19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/a8d67abf-902d-48d1-b667-56a62888bd06.png?resizew=620)
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【推荐2】如图,已知
,点P、Q分别是直线
,
上两点,点G在两平行线之间,连接
,
,点E是直线
下方一点,连接
,
,且
的延长线平分
,
平分
,若
,则
的度数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55bb0405afa96ebf94c5b03fd52763dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e66b12019cdf68327d34c90dff7c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f60df144dce72a2bdb020912e057e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019588539d42267b1e3cff1e475f3e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868291844e0120ab767a61491ea01f1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f60df144dce72a2bdb020912e057e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/6a7e091f-4191-4445-a3a4-dbcef4c01e71.png?resizew=164)
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解题方法
【推荐1】如图,已知
,
…,以此类推,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334891783fb205c03af674ca1fa73735.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c43dee42d93175967c4d33a4b59cf95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f1a4205c6831f0be754a66b3d90be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b030708f7e622f3f992649b21eec6b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334891783fb205c03af674ca1fa73735.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/171e3722-a1bf-4918-807a-43d613126628.png?resizew=196)
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【推荐2】将
绕点A逆时针旋转
,得到
,这时点B,C,D恰好在同一直线上,则
的度数为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e012dbccbaac604c8d9f48159fb21d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/d612814d-437d-4611-bacd-b58afe804cb7.png?resizew=269)
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