名校
1 . 如图,已知
,
,
,
,求
的度数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee730f6a2551fb1b582ecf290cfea233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6568df44adc0fb5198810bd50d452b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a91778530fee017af63165397d36b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fd16f9eca4fef818a8100435abf9e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/2bfbf18e-d700-4401-aaa2-a3705b572683.png?resizew=181)
您最近一年使用:0次
2 . 已知:如图,
,
,
,试说明
的道理.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934a9508c176f44bf58f88715bd98f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddd49625097d0a78df7170be4f882e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e470a25fa7f85c6a1dccb0585e0b3e32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2222ab63f72d1789c180b6e6bec557f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/498926fd-d43e-41e4-92cf-35d6974b3a7d.jpg?resizew=208)
您最近一年使用:0次
3 . 除了教材例题提供的作角平分线的办法,现在还有一种作法如下:
“在已知
的两边分别截取
,
(点M与点P在同一边上),连接
和
交于D点,画射线
,射线
即为
平分线”.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/83fb59bb-d741-48ea-8606-a6fa4aa9a4ef.png?resizew=167)
(1)请在图中按此作法作出射线
;
(2)试说明
的理由.
“在已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731016f5081dca7e5726598d757c0449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/83fb59bb-d741-48ea-8606-a6fa4aa9a4ef.png?resizew=167)
(1)请在图中按此作法作出射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
(2)试说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3d202a7578a772bd5c60d22b036bfe.png)
您最近一年使用:0次
4 . 如图,已知点
在
上,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43defd54316aac92a3d18d4d400033c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f48bbcf87506dbd40a7d0ebecf72aae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/d6a3b275-c5f8-4807-8bfb-aaeb25919980.png?resizew=114)
您最近一年使用:0次
5 . 如图,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a91778530fee017af63165397d36b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b39378ac8376017faecef7f1e3d8be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad24764fec5cacf1a400b9d59bb8101.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/920a40a2-eadb-418b-8c71-c2c7a8acf02f.png?resizew=152)
您最近一年使用:0次
6 . 如图,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d61d283d8793aa3ff5aa22271f4fcbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6815e92a34126b232ba6590f2e2badc2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/82915417-70c4-41aa-9b80-48ea5d40b320.png?resizew=144)
您最近一年使用:0次
7 . 如图,在
中,
,
为
的半径,点C为优弧
的中点,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c503e29373e8d87134bdb46bd3912910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/0e50b7a9-60cc-43d7-a9f1-2042ef983bd1.jpg?resizew=124)
您最近一年使用:0次
8 . 如图,在平面直角坐标系中,点
在
轴负半轴上,点
在
轴正半轴上,
,
.
(1)直接写出点
的坐标__________;
(2)如图2,点
为
的中点,点
为
轴负半轴上一点,以
为边作等边
,点
在第一象限,连接
并延长交
轴于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90455aad8110f3397ce72d063f60f25.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/a013f4b2-14b1-456d-a065-5ca9c2ab8889.png?resizew=318)
(1)直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f309e74c82afefa0ac5feaa88ae5ee.png)
您最近一年使用:0次
9 . 已知:如图,点C、D在
上,且
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf857e03d4320c999d328fd657c2d412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22facbd7894b1dcaf6a985e99f33f025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65abd881317a904932a1e9d5682b42a1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/af376d24-6f85-4e10-b207-906f078133f2.png?resizew=138)
您最近一年使用:0次
10 . 如图,已知点A,D,B,E在同一条直线上,
,
,
.
(1)求证:
:
(2)判断
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5d6e7ef3f341fd85acde9f60eaaff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c503e29373e8d87134bdb46bd3912910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c226581e14091779321c9fe91160ceef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/b933f80b-88c1-415c-b335-98c8ad7d2215.png?resizew=224)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1323c31873c713818327c88340d2d1c2.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafabd077934109c38255fa6d3a8bb60.png)
您最近一年使用:0次