如图,已知
与
互为余角,且
,
平分
,
平分
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/66d70c2c-d69d-40c3-9381-13b243db9a88.png?resizew=131)
(1)求
的度数;
(2)如果已知
,其他条件不变,则
______度;
如果已知
,其他条件不变,则
______度;
(3)从以上求
的过程中,你得出的结论是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2460507a462453e084eaf70a7d867e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1dd3c503ff0b4e68f035709e34bc63.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/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/66d70c2c-d69d-40c3-9381-13b243db9a88.png?resizew=131)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
(2)如果已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6978615637bd3febf56d23798f65306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08991e33572d0a7a830db8de33b88fe9.png)
如果已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be616944953f6020d8b7e41741d8e14a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08991e33572d0a7a830db8de33b88fe9.png)
(3)从以上求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
更新时间:2023-01-27 18:34:19
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图所示,OD是∠AOB的角平分线,OE是∠BOC的角平分线.
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893538233876480/2950913396064256/STEM/bb21876b-dbbc-4955-85c7-9c7aa5235fab.png?resizew=214)
(1)【在线课堂】若
,
,求∠DOE的度数;
(2)【拓展探究】若
,
,试探究m与n的关系.
(3)【实践应用】若
,当∠AOD与∠BOE的度数相差
时,求∠COE的度数.
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893538233876480/2950913396064256/STEM/bb21876b-dbbc-4955-85c7-9c7aa5235fab.png?resizew=214)
(1)【在线课堂】若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02901dd888d0873ab7be0a98256b69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfec0a7700c1b76094c8948806700d06.png)
(2)【拓展探究】若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76869ba8764733b0c0594b4b4fc2ff26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18435afc5c58ca49c36eab02712b9cb0.png)
(3)【实践应用】若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92a1b14bfe7fc874e1a98b8cc5f8a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832e54424228aaf3c8de5b9061544209.png)
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解答题-应用题
|
适中
(0.65)
【推荐2】综合与实践
将两个完全相同的直角三角板(
),按图1的方式放置,使边
和边
与直线
重合,
和
的顶点O重合.
度;
(2)如图2,若
平分
,求
的度数;
(3)如图3所示,把三角板
和
绕点O同时以相同的速度顺时针旋转,当
平分
时,
和
的度数之间有怎样的数量关系,请直接写出结论.
将两个完全相同的直角三角板(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bca2132ad16ab404dbf8176d3f99bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e515787ebe97ed2662237d9ca51ea1.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2f7bab4ed36ec5d04db3aeed2796f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
(3)如图3所示,把三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2f7bab4ed36ec5d04db3aeed2796f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77603496a315e39db671c0c1e4256cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】数学课上,老师给出如下问题:
直线
、
相交于点O,
,
平分
,射线
,求
的度数.
小丽:以下是我的解答过程(部分空缺).
解:如图1,因为射线
,所以
.
因为
与
互补,
,所以
.
因为
平分
,所以
.
因为
是直线
下方的一条射线,所以
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/b903b990-48ff-4a2a-8012-d1788c81ef1b.png?resizew=308)
(1)请补全小丽的解答过程;
(2)小聪说:“小丽的解答并不完整,符合题意的图形还有一种情况.”请在图2中画出小聪说的另一种情况,并解答.
直线
![](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/ebfcc6ea3a5df3a1c0104f36b3c51455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebef5bab02280cdc99cc7f689135cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
小丽:以下是我的解答过程(部分空缺).
解:如图1,因为射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebef5bab02280cdc99cc7f689135cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aead2de5abdb35782808acd313f85d7.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcc6ea3a5df3a1c0104f36b3c51455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3cd2f61809c044ee937762a075e794d.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5dcd1c8ae29b709ed44652ca0bc5320.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbe1a787bb1e5f92a5d5a795b71837a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/b903b990-48ff-4a2a-8012-d1788c81ef1b.png?resizew=308)
(1)请补全小丽的解答过程;
(2)小聪说:“小丽的解答并不完整,符合题意的图形还有一种情况.”请在图2中画出小聪说的另一种情况,并解答.
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解答题-问答题
|
适中
(0.65)
【推荐2】点
为直线
上一点,过点
作射线
,使
.将一直角三角板的直角顶点放在点
处.
(1)将三角板
按图1位置摆放,此时
是
的角平分线,求
的度数;
(2)将三角板
按图2位置摆放,此时
,求
的度数.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71bb53109aab57cf279b83839386d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/0963c4f9-250b-4779-96a2-b1bf703dc60b.png?resizew=384)
(1)将三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb76f88cb973c220cffa1c9c0721a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2f7bab4ed36ec5d04db3aeed2796f2.png)
(2)将三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1eb76f88cb973c220cffa1c9c0721a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae12c0bd87f76983be1e4c55bf4c96fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2f7bab4ed36ec5d04db3aeed2796f2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】如图1,在直线
上取一点O,向上作一条射线
,使
,将一直角三角板的直角顶点放在点O处,一边
在射线
上,另一边
在直线
的上方.如图2,将直角三角板
绕点O逆时针转动,当
与
第一次重合时停止.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/bb5def18-d76a-4ded-aa4c-cb0dfdd24745.png?resizew=653)
(1)如图2,
时,若
和
互余,且满足
始终在
内部,求此时
的度数;
(2)如图2,当
始终在
内部时,猜想
与
有怎样的数量关系(用含n的等式表示),并说明理由;
(3)如图2,当
时,若直角三角板
绕点O以每秒
的速度沿逆时针方向旋转,
与
第一次重合时停止,在旋转的过程中,若恰好有
,旋转的时间是 秒.(直接写出结果)
![](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/64336219e6cfb37e6ddbb08bfa75cdea.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/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711e331195e55e1c0133b0286d61a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/bb5def18-d76a-4ded-aa4c-cb0dfdd24745.png?resizew=653)
(1)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbcf19a6e433eedf221980313825f80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.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/75f55c6ac896ab4277fae2230a6e10b0.png)
(2)如图2,当
![](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/ed66570f697459aba9daa2eaf9460bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
(3)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbcf19a6e433eedf221980313825f80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711e331195e55e1c0133b0286d61a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654c79a470d5af5e0a34fd9233da5118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a493aeda9735e1a94191e06edb661b.png)
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