(2017广东广州)如图,平面直角坐标系中
是原点,
的顶点
的坐标分别是
,点
把线段
三等分,延长
分别交
于点
,连接
,则下列结论:
①
是
的中点;②
与
相似;③四边形
的面积是
;④
;其中正确的结论是 __________ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e698404fde91350c873592032ea5326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec32dae2a8966c629cdaea0cca4d25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f18975e22970b8fde117a588d9b681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c87b8e05d61ddc69dbc02772d719d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf33d73483c93f24cc6a1d76ef22ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3c024b213dbe2016bf593071d7856c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f18f78116d37176a4e7a7b5d0764268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82901484b0b4b192cdd45a88c6163aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d754c4ad51e4482e12a615d20a13fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0f572db5c9ca057212b60d9c2163e7.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925357956227072/1929155435225088/STEM/e322abc96d32435cbe9db4eb83878547.png?resizew=153)
2017高三·全国·专题练习 查看更多[1]
(已下线)《2017届优生百日闯关系列》【专题一】第四关 以多结论的几何及二次函数问题为背景的选择填空题
更新时间:2018-04-22 00:19:41
|
【知识点】 几何证明选讲
相似题推荐
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】A.(坐标系与参数方程)已知直线的参数方程为
(
为参数),圆
的参数方程为
(
为参数),则圆心
到直线的距离为_________.
B.(几何证明选讲)如右图,直线
与圆
相切于点
,割线
经过圆心
,弦
于点
,
,
,则
_________.
C.(不等式选讲)若存在实数
使
成立,则实数
的取值范围是_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37b006b4031ced29773f7e75c388aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf87696f5db64d3e55b1827e0594c7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
B.(几何证明选讲)如右图,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eea78bf026d76f1cb9cc3dc9349a193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbda29fd703fd13e1bf4860d31cc5dbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
C.(不等式选讲)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05dedcf6696f383d8bf945eb2de44c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2014/4/25/1571674837360640/1571674843054080/STEM/d59fdd7c0d82400091076ad3fe119588.png?resizew=201)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
【推荐2】如图,
是圆的内接三角形,
切圆于点
交圆于点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc79fee8f7996b58dbed724fe6afcddb.png)
____ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5745e2dc1d5308872c68ae932cd13ffa.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447410416155155a089fbea1e7bb75d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906aef5ce26e9e3dfad847f27544fd78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc79fee8f7996b58dbed724fe6afcddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5745e2dc1d5308872c68ae932cd13ffa.png)
![](https://img.xkw.com/dksih/QBM/2010/5/8/1569722173816832/1569722178510848/STEM/c79dc4108ba6463e856a12dbdb6702cc.png?resizew=160)
您最近一年使用:0次