如图,点A、O、B在一条直线上,
,
平分
.
,求
的度数;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e0095d3c7454e53ae79a3ab51b37e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fab6cd81ba9683d7c48ce2c476d36e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01027f31797b6965bf2e8b52ab53a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
22-23七年级上·湖北黄冈·期末 查看更多[2]
更新时间:2023-07-25 14:34:22
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,以直线
上一点
为端点作射线
,
,顶点放在直线
上的点
处.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/4eba0109-2c8b-4686-ac19-643d632b35f9.png?resizew=439)
(1)如图①,若
的一边
放在射线
上,且
,则
________
;
(2)如图②,将
绕点
逆时针方向转动到某个位置时,
,使
在
内部,且满足
,求
的度数;
(3)如图③,将
绕点
逆时针方向转动到如图所示位置时,若
恰好平分
,请判断
与
的大小关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95a92fcd0cd5e55f1d32d42504a5690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/4eba0109-2c8b-4686-ac19-643d632b35f9.png?resizew=439)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165074e8ccf062837496af7a53c66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1f08bd1651f93a4303cf3a3b822391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)如图②,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7fed42fc9c8ca0b779a91a66d54df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21006e33be14f14194d79cd31ce51d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
(3)如图③,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbee6d5731d6f4bb1e4f2ba3d89b7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,点O在直线
上,
,
,
是
的角平分线,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae210ad2af05408c8c138880a53cdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893ae3020a8a7d535814300b0c17e470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/bb360da8-9cb6-48d1-8175-4a3971e7b31f.png?resizew=228)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】已知:如图
,与点
不重合的两点
、
分别在
、
上,
平分
,
所在的直线与
的平分线所在的直线相交于点
.
(1)当点
、
分别在射线
、
上,且
时,求
的度数;
(2)当点
、
分别在射线
、
上运动时,
的大小是否发生变化?若不变,请给出证明;若发生变化,请求出
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a563c50a7f6d10fa46339d7107fc85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eefb9a7a779b6c8d21187ee751c420a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3daae8ec60b2b1f7577dee687247cebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548e9e5752cd788a0cb5dd74372f0c8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644528632881152/2647098970677248/STEM/518da63a-1ddf-4969-bfbd-6cc0ed7a4f41.png)
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解答题-计算题
|
适中
(0.65)
【推荐2】如图1,直角三角板
的直角顶点
在直线
上,线段
,
是三角板的两条直角边,射线
是
的平分线.
(1)当
时,求
的度数;
(2)当
时,求
的度数;(用含
的式子表示);
(3)当三角板绕点
逆时针旋转到图2位置时,
,其它条件不变,求
的度数(用含
的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/15d6b426-e487-438e-831a-4571b30a0f94.png?resizew=287)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299c04e41db97ebe1f9d38ae8ccc26c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ca2a90dce96b8c1dbfca17590c611a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(3)当三角板绕点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ca2a90dce96b8c1dbfca17590c611a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
解答题-应用题
|
适中
(0.65)
【推荐3】课题学习:平行线问题中的转化思想.
【阅读理解】“两条平行线被第三条直线所截”是平行线中的一个重要的“基本图形”.与平行线有关的角都存在着这个“基本图形”中,且都分布在“第三条直线”的两旁.当发现题目的图形“不完整”时要添加适当的辅助线将其补充完整.将“非基本图形”转化为“基本图形”,这体现了转化思想.有这样一道典型问题:
例题:如图1.已知
,点E在直线
、
之间,探究
与
、
之间的关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/25/e11e1839-53de-44dd-8fb5-10eee21571cb.png?resizew=485)
解:过点E作
.
,
,
,
,
,
,
.
【学以致用】
(1)如图1,当
,
时,
_______;
(2)①如图2,已知
,若
,
,求出
的度数.
②如图3,在①的条件下,若
、
分别平分
和
,求
的度数.
【阅读理解】“两条平行线被第三条直线所截”是平行线中的一个重要的“基本图形”.与平行线有关的角都存在着这个“基本图形”中,且都分布在“第三条直线”的两旁.当发现题目的图形“不完整”时要添加适当的辅助线将其补充完整.将“非基本图形”转化为“基本图形”,这体现了转化思想.有这样一道典型问题:
例题:如图1.已知
![](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/eb3de20ba8bda63c650ef571be155702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/25/e11e1839-53de-44dd-8fb5-10eee21571cb.png?resizew=485)
解:过点E作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25eff69a4a0dc7a7ab183843303d333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8cae87b18c1b5e8e1ab4a8790b1858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b43312722cfd1afafc228445aacb0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7c9d9482998f84408e2723dc49ffb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d161c97865700dc418298ebf3a1c9fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7115fdaab5a4369164cd8c0cc10828b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b77c2dbc7ca2e1c76c1d4e0ac2276f.png)
【学以致用】
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54a216ed6a5bc56af1f501426ca438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa0f4484f901bb727fbeae1a044d714.png)
(2)①如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4f318fd596282e1d965ab29bbf362f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bde2e69b68e808bb76b2e852936ec59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
②如图3,在①的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384d0a02d097ac7aa8a19e8da6f9767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed24d7acba0b3a7ebf4d520296424a3.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】如图,点
在直线
上,
,
.
,求
的度数;
(2)试猜想
和
的数量关系,请直接写出结果 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8052651082b1215593dafbf10e72b837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c44886f2d738f5b277e132f455a50eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00e0ca93b81029af5c4cd3bbd0314ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
(2)试猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f91270ddbe1cf3c1362e1b95aee14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】
(1)解方程组:
.
(2)如图,已知∠1=75°,∠2=105°,请证明AB与ED平行?
(1)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e2ad51127b47b928e8f90ff14fc2fe7.png)
(2)如图,已知∠1=75°,∠2=105°,请证明AB与ED平行?
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897062008438784/2980557665918976/STEM/5a296378-9805-4f6b-807f-10710e528c9c.png?resizew=205)
您最近一年使用:0次