题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161757-25926.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161758-73452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161758-65857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161758-88500.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161759-22868.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161759-55308.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161759-10149.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161759-58306.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161800-98837.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161800-76502.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161800-95370.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161800-39176.gif)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-62839.gif)
(2)若纸片
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161758-73452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-17063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161759-22868.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-65844.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-14012.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-59568.jpg)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-77157.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-87182.gif)
且.
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161800-76502.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161800-95370.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161803-99000.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161803-64885.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-62839.gif)
(2)最小旋转
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161803-92210.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-14012.gif)
若四边形ACDE成为以
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161801-14012.gif)
则
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161803-78517.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-65624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-79203.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-76525.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-59781.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-65624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161805-54590.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161805-23731.gif)
在
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161805-84385.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-76525.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-59781.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161805-70516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161804-65624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161805-87184.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161806-50243.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161802-75441.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161806-59017.gif)
解析
核心考点
试题【已知两个全等的直角三角形纸片、,如图11放置,点、重合,点在上,与交于点.,,.(1)求证:是等腰三角形;(2)若纸片不动,若绕点逆时针旋转.问首次使四边形成为】;主要考察你对轴对称等知识点的理解。[详细]
举一反三
A.72° | B.108° | C.144° | D.216° |
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161755-12870.png)
A. | B.等边三角形 | C.正方形 | D.正六边形 |
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161746-49874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161742-68260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161742-40609.png)
(1)画图,已知线段a和锐角
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161736-53774.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161736-53774.gif)
(2)回答问题:
满足上述条件的大小不同的共有________种。
|
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161736-53774.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161736-18282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106161736-29459.jpg)
最新试题
- 1如右图所示,地球绕OO′轴自转,则下列正确的是( )A.A、B两点的角速度相等B.A、B两点线速度相等C.A、B两点的
- 2Brown said he was by no means annoyed;_____ he was glad to b
- 3(8分)杭州所前“杨梅节”期间,某中学70名教职工组团前往参观欣赏,旅游景点规定:①门票每人60元,无优惠;②上山游玩可
- 4文艺复兴最早兴起于[ ] A.法国B.英国C.意大利D.美国
- 5甲、乙、丙、丁4个足球队参加比赛,假设每场比赛各队取胜的概率相等,现任意将这4个队分成两个组(每组两个队)进行比赛,胜者
- 6在△ABC中,若 (c+b+a)(c+b-a)=3bc,则A=( )A.150°B.120°C.60°D.30°
- 7已知点A的坐标是(1-t,1-t,t),点B的坐标是(2,t,t),则A与B两点间距离的最小值为( )A.55B.55
- 8—How far is your family from here?—It"s about ten _______ wa
- 9如图,已知△ABC,CP,BP分别平分△ABC的外角∠ECB、∠DBC,若∠A=50o,那么∠P= .
- 10从所给数据分析,下列选项正确的是( )温度/℃10305060溶解度/g氯化钠35.836.337.037.3硝酸钾2
热门考点
- 1要治疗白化病,根本措施是[ ]A.基因治疗B.手术治疗C.射线照射D.特殊药物治疗
- 2已知a=log60.2,b=60.2,c=0.26,则a,b,c由小到大的顺序是______.
- 3(7分)根据下表回答下列问题:x28.028.128.228.328.428.528.628.728.8x2784.00
- 4下表是稀硫酸与某金属反应的实验数据分析上述数据,回答下列问题:(1)实验4和5表明_________对反应速率有影响;_
- 5在密码学中,直接可以看到内容为明码,对明码进行某种处理后得到的内容为密码.有一种密码,将英文26个字母,…,(不论大小写
- 6下列哪个变化与其他三个变化有本质区别A.酒精挥发B.燃放烟花C.海水晒盐D.榨取果汁
- 7与地球上存在生命物质无关的条件是[ ]A.日地距适中 B.地球公转方向适宜C.
- 8The waters off the Diaoyu islands, first _____ in Ming Dynas
- 9已知实数a,b满足等式(12)a=(13)b,则下列五个关系式:①0<b<a②a<b<0③0<a<b④b<a<0⑤a=b
- 10完成下列两项调查:①从某社区125户高收入家庭、280户中等收入家庭、95户低收入家庭中选出100户,调查社会购买能力的