题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223426-96080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223426-39451.jpg)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:由
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223426-96080.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223426-96080.png)
∴∠BAC=∠DAE
再补充
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223426-48873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223427-20261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223427-33068.png)
但补充
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223426-55318.png)
故选B.
点评:解答本题的关键是熟练掌握有两组角对应相等的两个三角形相似;有两组边对应成比例及夹角相等的两个三角形相似.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223417-93779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223417-88072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223417-12947.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223417-52991.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223412-96145.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223406-14123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223406-44674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223407-59263.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223407-39570.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223358-48456.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223358-57211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223358-46687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223359-34222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223359-97494.jpg)
(1)图中有 个等腰三角形;
(2)求BC的长(用含
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223358-57211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223351-81207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223351-79305.jpg)
(1)直接写出
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102223351-52889.png)
(2)求证:△ABD∽△CED;
(3)若AB=12,AD=2CD,求BE的长.
最新试题
- 1(8分)某高级中学共有3000名学生,各年级男、女生人数如下表: 高一高二高三女生523xy男生487490z已知在全校
- 2下列句子中,划线的词语使用不恰当的一句是( )A.在校级篮球赛中,两支球队原定于月底进行比赛,因场地问题无法按时进行,最
- 3This pair of jeans looks nice_____ Sandy because she looks v
- 4食物中的蛋白质经消化转变成了______,脂肪经消化变成了______.
- 5We had a really bad time about six months ago but now things
- 6如图,某同学剪了两片角度均为50º的硬板纸纸片(∠BAC=∠EDF=50º),将其中一片平移,连结AD,如果∆AGD是个
- 7The people below are all looking for a hotel in Scotland for
- 8缺词填空。(10分)China is a large country with a long h__小题1:__ . O
- 9Special Bridges Help Animals Cross the Road— Reported by She
- 10下图是明朝锦衣卫印,持有此印的人 [ ]A.掌管全国军政大权 B.掌管全国财政大权 C.充当皇帝顾问,后来参与
热门考点
- 1下列加点字的读音全部相同的一项是 ( )A.行旅行头行将就木行贿受贿B.给予给水自给自足不给面子
- 2家用电熨斗的铭牌上标有“220V 880W”的字样。求:(1)电熨斗正常工作时的电流。(2)电熨斗正常工作1min产生的
- 3国际金价2013年4月至6月下跌期间,许多中国消费者纷纷抢购黄金,其中包括不少中年女性,以至于引发外界对“中国大妈”抢购
- 4计算:。
- 5自然保护区的功能有:( )①天然基因库 ②天然实验室 ③活的自然博物馆 ④天然休闲场 ⑤天然狩猎场A.①②③B.②
- 6计算:.
- 7如图等高线由底向高弯曲的地表形态是( )A.山脊B.丘陵C.山谷D.盆地
- 8下列句子中,加粗的成语,运用错误的有哪些?试指出错在哪里。 ①有些人把入党看作做官的终南捷径,这种思想和共产主义是毫不相
- 9读阅读材料《众志成城共渡难关》,完成问题。众志成城共渡难关 ①“5·l2”汶川特大地震发生后,我们听得最多的词语就是“
- 10下列不属于发酵技术在生活中应用的是( )A.酒精生产B.抗生素生产C.塑料生产D.酱制品生产