已知:如图,在
中,
,
,若
,
,
,求:四边形
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4dd4faa9e59fa8e282ecec970d3d2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f979d5406af7e951f386dbb55a9617eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5a8fddaedd9f15e26db1df377da4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64e0206b1814c35cc96bd2b6b12239a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d92ae441a3776a921b4e1b51ec09e0.png)
![](https://img.xkw.com/dksih/QBM/2019/9/11/2288349243703296/2290018270265344/STEM/7ec9e229c193405c86f43e92b48537ce.png?resizew=169)
18-19九年级上·上海浦东新·阶段练习 查看更多[2]
上海市浦东新区上海第二工业大学附属龚路中学2018-2019学年九年级(上)第一次朋考数学试题(五四学制)(已下线)第七章 相似三角形(2)(三角形一边的平行线)-备战2021年中考数学考点 核心考点清单(上海专用)
更新时间:2019-09-13 20:37:00
|
【知识点】 由平行截线求相关线段的长或比值解读
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】如图,抛物线
与x轴相交于
,
,与y轴相交于点C,点P在抛物线上运动.
(1)直接写出抛物线的解析式;
(2)若以P为圆心,2为半径的
与坐标轴相切,直接写出点P的坐标;
(3)若
的面积等于3,直接写出点P的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb9ad466c2dcbbe064bad2828ea0ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d03fa28c117649b0fdfe17eed7b583.png)
(1)直接写出抛物线的解析式;
(2)若以P为圆心,2为半径的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://img.xkw.com/dksih/QBM/2020/12/31/2625860857495552/2634330985242624/STEM/0b035568871a4d769309a62450dbfc5a.png?resizew=142)
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,点
是
延长线上的点,过
、
、
三点作
分别交
于点
,交
于点
,直径
.
(1)证明:
平分
;
(2)若
,
,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d33367290ac86e10c2200df76f294b9.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31123a003f9c8be58e0d78399e43c14a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c253dff5777118b5ccc0adb342cfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd783d2f6e13e5f8f75f0c7113ea6f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://img.xkw.com/dksih/QBM/2020/12/19/2617781270315008/2619808535633920/STEM/870898c8-1f55-451b-aeb8-8f6962e5a8b8.png?resizew=266)
您最近一年使用:0次