已知:如图,在
中,
、
的平分线相交于点O,过点O的直线
,分别交
、
于点D、E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/f5f6959c-40ec-4874-b405-94d6aa4e92a6.png?resizew=149)
(1)求证:
;
(2)若
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/f5f6959c-40ec-4874-b405-94d6aa4e92a6.png?resizew=149)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb773a664fa72fc5d8fe377e9f891901.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
23-24九年级上·安徽六安·期中 查看更多[5]
安徽省六安市霍邱县2023-2024学年九年级上学期期中数学试题安徽省安庆市宿松县四校2023-2024学年九年级上学期期中联考数学试题(已下线)安徽省阜阳市界首市第上中学2023-2024学年沪科版九年级上学期期中数学试题安徽省阜阳市2023-2024学年九年级上学期期中数学试题 安徽省六安市皋城中学2023-2024学年九年级上学期月考数学试题
更新时间:2023-11-02 22:01:23
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图为
的正方形网格,每个小正方形的边长均为1,小正方形的顶点叫做格点.已知
的三个顶点均在格点上,按要求解答:
(1)请画出
的边
上的高
;
(2)连接格点,用一条线段将
分成面积相等的两部分(直接画图即可);
(3)直接写出
的面积为 ;
(4)若
平分
,则
的度数为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d009739b5b5362c7902eeeada94adb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/20/18bfa5a8-2838-4fbf-851f-cfc1491c0deb.png?resizew=142)
(1)请画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)连接格点,用一条线段将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45aa9dc428cdd15252b9378fe07b8baf.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
平分
交
于点
,过点
作
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/20d68f69-2952-4e35-93fc-e211d2b809d4.png?resizew=145)
(1)求
的度数;
(2)求证:
是等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236c72942e305dfdede4b4f44c650e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e932b4add3175358f15be0e1f7104e79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/20d68f69-2952-4e35-93fc-e211d2b809d4.png?resizew=145)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefe4a3e7a7fa195ed6a6712447639b7.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AB是
的直径,C为圆上一点,D是
的中点,
于H,垂足为H,连
交弦
于E,交
于F,联结
.
(1)求证:
.
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d55963a9b9b02737110f57a377b41cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13201edf05c7a9ae2c7e5cf0daa16604.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0f7c8c933c3361a0e7305ef1203c1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://img.xkw.com/dksih/QBM/2019/4/25/2190113941053440/2190270243373056/STEM/04210e14ad19451499ad89dc3b834445.png?resizew=245)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,在四边形
中,
,
,点
在
上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/845f3bd4-d015-42a9-b500-58197dd24e54.jpg?resizew=103)
(1)求证:
.
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.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/f135ae4531e59a3c5a7c1e475a5e8934.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/845f3bd4-d015-42a9-b500-58197dd24e54.jpg?resizew=103)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604a80b177865712cd42f48fa7c3a09d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次