如图,
是边长为
的正方形,以
为圆心,
为半径的圆弧与以
为直径的半⊙O交于点
,延长
交
于
.
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569964573884416/1569964579012608/STEM/cd35b21af7eb419481fcc026109f671e.png?resizew=136)
(1)求证:
是
的中点;
(2)求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569964573884416/1569964579012608/STEM/cd35b21af7eb419481fcc026109f671e.png?resizew=136)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
11-12高三上·江苏泰州·期末 查看更多[1]
(已下线)2011届江苏省姜堰市第二中学高三第一学期学情调研数学试卷
更新时间:2016-11-30 12:44:01
|
【知识点】 几何证明选讲
相似题推荐
解答题-证明题
|
适中
(0.64)
【推荐1】选修4—1:几何证明选讲
如图,
是⊙
的直径,
是⊙
上的两点,
⊥
,过点
作⊙
的切线FD交
的延长线于点
.连结
交
于点
.
求证:
.
如图,
![](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/ea9aa3f533894ca87a394f7a1dfd0ea3.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768c46a01f0f3403b7bb59348ca28823.png)
![](https://img.xkw.com/dksih/QBM/2015/1/7/1571957203386368/1571957209137152/STEM/0d9d65d4329041bc8860544ed9104ad5.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,已经⊙O和⊙M相交于A、B两点,AD为⊙M的直径,直线BD交⊙O于点C,点G为弧BD中点,连结AG分别交⊙O、BD于点E、F,连结CE.
![](https://img.xkw.com/dksih/QBM/2011/4/6/1570105453117440/1570105458581504/STEM/3db6e8d9b3f240559fc76853cf124dcb.png?resizew=196)
(Ⅰ) 求证:AG·EF=CE·GD;
(Ⅱ) 求证:
![](https://img.xkw.com/dksih/QBM/2011/4/6/1570105453117440/1570105458581504/STEM/3db6e8d9b3f240559fc76853cf124dcb.png?resizew=196)
(Ⅰ) 求证:AG·EF=CE·GD;
(Ⅱ) 求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eabc98bc07ba585bd447b12f00d20ac.png)
您最近一年使用:0次