如图,已知
于点O,
,
平分
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c87eb3ed1ee03bb5426d1a1ff1cde70.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/42e7b8a59f8d66176463f3d71f882a26.png)
更新时间:2024-05-19 20:08:45
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图①,已知∠AOB=80°,OC是∠AOB内的一条射线,OD,OE分别平分∠BOC和∠COA.
(1)求∠DOE的度数;
(2)当射线OC绕点O旋转到OB的左侧时如图②(或旋转到OA的右侧时如图③),OD,OE仍是∠BOC和∠COA的平分线,此时∠DOE的大小是否和(1)中的答案相同?若相同,请选取一种情况写出你的求解过程;若不相同,请说明理由.
(1)求∠DOE的度数;
(2)当射线OC绕点O旋转到OB的左侧时如图②(或旋转到OA的右侧时如图③),OD,OE仍是∠BOC和∠COA的平分线,此时∠DOE的大小是否和(1)中的答案相同?若相同,请选取一种情况写出你的求解过程;若不相同,请说明理由.
![](https://img.xkw.com/dksih/QBM/2018/8/15/2010866076196864/2011703665836033/STEM/e0f0b4483b4b4c3ab7661f97483c4010.png?resizew=294)
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
,
,
在同一条直线上,
,
,
是
的一条靠近
边的三等分线.
![](https://img.xkw.com/dksih/QBM/2022/1/6/2894304520421376/2951870090559488/STEM/b6ca4be6-6578-4c82-a2d5-1f0640365c98.png?resizew=173)
(1)求
的度数;
(2)
是
的平分线吗?请你说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2dcdb4f412aaca92407c6d7963a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa08f03c51bd363447d0bae03e40d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1646bcdf3e246b4dc2609317cf1398ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://img.xkw.com/dksih/QBM/2022/1/6/2894304520421376/2951870090559488/STEM/b6ca4be6-6578-4c82-a2d5-1f0640365c98.png?resizew=173)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知
,一条直线分别交
、
于点E、F,
,
,点Q在
上,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/e87894c8-a1ab-4673-9a96-ca394c711c51.jpg?resizew=150)
(1)已知
,直接写出
的度数;
(2)求证:
平分
.
![](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/173cea931c4988da31b3dd3ae1b47f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac3db9e03aaae5680cf0c83c3d3fc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bdbbd3084ddc946e12d530d2192522.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/e87894c8-a1ab-4673-9a96-ca394c711c51.jpg?resizew=150)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97210c404b6b006fddc595c628fe1242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547139bcfad65df896be5c87243913bc.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5754ed0cdc3305585f34eb0c8345fad.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,OC是∠AOB的平分线,且∠BOD=
∠COD.
(1)当∠BOD=15°时,则∠AOB的大小为 ;
(2)当∠AOB=70°时,则∠AOD的大小为 ;
(3)若射线OP在∠AOD的内部,且∠POD=∠AOB,∠AOP与∠AOC数量关系可以表示为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)当∠BOD=15°时,则∠AOB的大小为 ;
(2)当∠AOB=70°时,则∠AOD的大小为 ;
(3)若射线OP在∠AOD的内部,且∠POD=∠AOB,∠AOP与∠AOC数量关系可以表示为 .
![](https://img.xkw.com/dksih/QBM/2021/3/12/2676173332783104/2677109381373952/STEM/818bc1a598594bcea484e819fc52516c.png?resizew=256)
您最近一年使用:0次