题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062402-78901.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062403-15864.png)
解析
根据勾股定理得:x2+22=(9-x)2
解得:x=
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062403-15864.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062352-66820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062352-75896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062352-88033.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062354-80730.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062347-74915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062347-23398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062348-30442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062348-58159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062348-18767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062348-38213.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062347-23398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062349-39333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062349-96742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062349-84461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062349-38794.jpg)
正方形网格中,每个小正方形的顶点称为格点,以格点为顶点的三角形叫格点三角形.
数学老师给小明同学出了一道题目:在图正方形网格(每个小正方形边长为1)中画出格点△ABC,使
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062340-81162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062341-57023.png)
小明同学的做法是:由勾股定理,得
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062341-35655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062341-74259.png)
(1)请你参考小明同学的做法,在图中的正方形网格(每个小正方形边长为1)中画出格点△
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062341-72786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062341-14324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062342-71350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062342-91663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062342-81700.png)
(2)观察△ABC与△
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062343-17772.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062343-43444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062343-42932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062343-27713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062335-23309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062335-56461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062336-23635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062336-62815.png)
A.35° | B.45° | C.55° | D.65° |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062336-41178.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062331-24589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062331-47905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062331-89017.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062331-35346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062332-17020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062332-15449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062331-35346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062332-17020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062332-84239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062332-43904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062332-64181.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103062333-29263.jpg)
最新试题
- 1In this modern world, we rush around all day, doing things,
- 2掌握好物质的性质、用途和化学用语是学好化学的基础,完成以下选择和填空:(1)浓硫酸能使白纸变黑,是因为它有____[(1
- 3“抛掷1枚均匀硬币正面朝上”是 [ ]A.必然事件B.不可能事件C.随机事件D.不能确定
- 4维新派的政治团体是 [ ]A.强学会B.兴中会 C.中国同盟会 D.中国国民党
- 5下列图形一定相似的是( )A.有一个角相等的等腰三角形B.有一个角相等的菱形C.有一个角相等的平行四边形D.有一个角
- 6写作(35分)有这样一则广告语:“人生就像一段路程,重要的不是目的地,而是沿途的风景。”有的人直奔目的地,忽略了沿途的风
- 7读中国、日本和韩国人口负担系数百年比较图,回答(1)——(3)题。 [注:人口负担系数:(14岁及以下人口数+65岁及以
- 8将0.2mol/L醋酸与0.4mol/L的氢氧化钠溶液等体积混合,溶液中各种离子浓度关系正确的是[ ]A. [N
- 9如图为人体某处的血管及血流情况示意图,下列说法错误的是( )A.若c处尿素浓度降低,则b为肾小管周围的毛细血管B.若c
- 10读“某区域环境问题示意图”,判断19~21题小题1:图中反映的环境问题主要有A.土地荒漠化、酸雨污染B.气候变暖、土地荒
热门考点
- 1加热5.00 g碳酸钠和碳酸氢钠的混合物,使碳酸氢钠完全分解,混合物质量减少了0.31 g,则原混合物中碳酸钠的质量为[
- 2对于现代人们来讲,为了减轻“紧张症”,可用漂浮疗法来达到.漂浮池内有一定深度的水,水中加有大量的______(选填“盐”
- 3如图,若∠BOD=2∠AOB,OC是∠AOD的平分线,则①∠BOC=13∠AOB;②∠DOC=2∠BOC;③∠COB=1
- 4阅读下面材料,按要求完成后面作业。三角形内角平分线性质定理:三角形内角平分线分对边所得的两条线段和这个角的两边对应成比例
- 5成等差数列的三个正数的和等于15,并且这三个数分别加上2、5、13后成为等比数列{bn}中的b3、b4、b5.(I) 求
- 6图中跨经度最广的大洲是[ ]A.AB.BC.CD.D
- 7My mother likes watching TV,because it’s_______.A.relaxing
- 8纵贯南北美洲的山系( )A.喜马拉雅山系B.阿尔卑斯山系C.科迪勒拉山系D.阿特拉斯山系
- 9已知向量a=(cosα,-2),b=(sinα,1)且a∥b,则tan(α-)等于( )A.3B.-3C.D.-
- 10道德是一种引导、约束人们行为的行为规则,具有国家强制性和普遍约束力。[ ]