如图,
,
,点
、
在
上,
交
的平分线
于点
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05879681dd3b72187ecf650f30721f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6beda2518cf76da94d7ec9a813dcfa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c437149e9364f9f03afbd5f869cd3755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8c257f5615d30660cef4157c6b273.png)
![](https://img.xkw.com/dksih/QBM/2019/8/14/2268648717238272/2268684394389504/STEM/d9cf7b4475b4420b921f9b6ddc6229bb.png?resizew=209)
2018·重庆·一模 查看更多[7]
更新时间:2019-08-14 17:13:07
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,在直线
上取一点
,在
同侧引射线
,
,
,
使
和
互余,射线
和
分别平分∠COE和∠BOE,
求证:
.
![](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/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/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f55c6ac896ab4277fae2230a6e10b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7307ac7510cf35f74337d368b94da4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f0cc437cc9ff0ae132efa221a96b39.png)
![](https://img.xkw.com/dksih/QBM/2019/1/5/2112124105981952/2114521554501632/STEM/73563f2a1e4b425bb20184c040b07e61.png?resizew=140)
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解答题-证明题
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适中
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【推荐1】已知
,点
在直线
与
之间,连接
.
(1)如图1,若
,求
的度数;
(2)如图2,求证∶
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/11cb3c3c1717c4d53d1f2dbf15167e6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/17/879beb2d-d7e3-4961-b8d0-735767b49c34.jpg?resizew=281)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e88daffac75ff075f9d747e205e05a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
(2)如图2,求证∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75ea0d514d05a98dc69af81eb604c88.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,直线CD与直线AB相交于点C,
根据下列语句画图(注:可利用三角尺画图,但要保持图形清晰)
![](https://img.xkw.com/dksih/QBM/2013/5/22/1573655245160448/1573655251255296/STEM/25fd041b695548b08f5c239a78dca1c8.png)
(1)过点P作PQ∥AB,交CD于点Q;过点P作PR⊥CD,垂足为R;
(2)若∠DCB=120°,则∠QPR是多少度?并说明理由.
根据下列语句画图(注:可利用三角尺画图,但要保持图形清晰)
![](https://img.xkw.com/dksih/QBM/2013/5/22/1573655245160448/1573655251255296/STEM/25fd041b695548b08f5c239a78dca1c8.png)
(1)过点P作PQ∥AB,交CD于点Q;过点P作PR⊥CD,垂足为R;
(2)若∠DCB=120°,则∠QPR是多少度?并说明理由.
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解答题-证明题
|
适中
(0.65)
【推荐1】小明在学习过程中,对教材中的一个有趣问题做如图探究:
中,
,
是角平分线,
是高,
、
相交于点F.求证:
;
(2)【变式思考】如图2,在
中,
,
是
边上的高,若
的外角
的平分线交
的延长线于点F,其反向延长线与
边的延长线交于点E,若
,求
和
的度数;
(3)【探究延伸】如图3,在
中,在
上存在一点D,使得
,角平分线
交
于点F.
的外角
的平分线所在直线MN与
的延长线交于点M,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7480ab1a16ccbd8f28166cf6b97aad54.png)
(2)【变式思考】如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34b2c6c1379ea4968962e96eba6cd18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19766bbdc2d23ae20e9f34530c3a1543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7724af2445c723d1392aed54d210ed3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adcae9d00980803e5955228d1e217abe.png)
(3)【探究延伸】如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd6fe78f6cfdfefd6d8be45473b25b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34b2c6c1379ea4968962e96eba6cd18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0267475b40377e29e72f24168c0c46f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7724af2445c723d1392aed54d210ed3a.png)
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【推荐2】如图,已知在△ABC中,AB=AC,∠BAC=80°,AD⊥BC,AD=AB,联结BD并延长,交AC的延长线干点E,求∠ADE的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/27/14f865c4-ba52-486b-b332-701b9af7488a.png?resizew=219)
您最近一年使用:0次