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如图,∠2的同旁内角是?∠3有同旁内角么?∠1呢?
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.如图与∠4是同旁内角的是
∠1
∠2
∠3
∠5
如图描述同位角内错角同旁内角关系不正确的是
∠1与∠4是同位角
∠2与∠3是内错角
∠3与∠4是同旁内角
∠2与∠4是同旁内角
如图如果∠1=40°∠2=100°那么∠3的同位角等于______∠3的内错角等于______∠3的
如图下列说法错误的是
∠A.与∠C.是同旁内角
∠1与∠3是同位角
∠2与∠3是内错角
∠3与∠B.是同旁内角
如图描述同位角内错角同旁内角关系不正确的是
∠1与∠4是同位角
∠2与∠3是内错角
∠3与∠4是同旁内角
∠2与∠4是同旁内角
如图描述同位角内错角同旁内角关系不正确的是
∠1与∠4是同位角
∠2与∠3是内错角
∠3与∠4是同旁内角
∠2与∠4是同旁内角
下列说法中正确的是
“同旁内角互补”是真命题
“同旁内角互补”是假命题
“同旁内角互补”不是命题
“同旁内角互补,两直线平行”不是命题
如图与∠1互为同旁内角的角共有个.
1
2
3
4
如图下列说法错误的是
∠A.与∠C.是同旁内角
∠1与∠3是同位角
∠2与∠3是内错角
∠3与∠B.是同旁内角
穿过如图所示的△ABC内部画一条直线不包括经过△ABC的顶点能否使得与∠C成同旁内角的角有3个能否
如图∠1和∠2是一对
同位角
对顶角
内错角
同旁内角
如图按各组角的位置判断下列结论①∠2与∠6是内错角②∠3与∠4是内错角③∠5与∠6是同旁内角④∠1与
①②
②③④
①②④
①②③④
如图所示有下列五种说法①∠1和∠4是同位角②∠3和∠5是内错角③∠2和∠6是同旁内角④∠5和∠2是同
①②③
①②③④
①②③④⑤
①②④⑤
下列条件中不能判定两直线平行的是
同旁内角相等
内错角相等
同位角相等
同旁内角互补
如图与∠1是同旁内角的是
∠2
∠3
∠4
∠5
如图∠1的同旁内角是_____∠2的内错角是_____.
如图下列说法错误的是..
∠1和∠3是同位角
∠1和∠2是同旁内角
∠2和∠5是内错角
∠4和∠5是同旁内角
如图如果∠1=40°∠2=100°那么∠3的同位角等于______∠3的内错角等于______∠3的
如图∠1与∠2是同旁内角若∠1=53°则∠2的大小是
127°
53°
127°或53°
不能确定
.如图与∠4是同旁内角的是
∠1
∠2
∠3
∠5
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如图在等腰梯形ABCD中AD=BC=AB=DC=2点EF分别为线段ABBC的三等分点O为DC的中点则=.
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已知点F为抛物线Ey2=4x的焦点点A2m在抛物线E上则|AF|=.
科研人员探究了补充蓝光对油桃叶片色素含量的影响结果如表.下列分析不正确的是
某大型娱乐场有两种型号的水上摩托管理人员为了了解水上摩托的使用及给娱乐场带来的经济收入情况对该场所最近6年水上摩托的使用情况进行了统计得到相关数据如表 I请根据以上数据用最小二乘法求水上摩托使用率y关于年份代码x的线性回归方程并预测该娱乐场2018年水上摩托的使用率. Ⅱ随着生活水平的提高外出旅游的老百姓越来越多该娱乐场根据自身的发展需要准备重新购进﹣批水上摩托其型号主要是目前使用的I型Ⅱ型两种每辆价格分别为1万元1.2万元.根据以往经验每辆水上摩托的使用年限不超过四年娱乐场管理部对已经淘汰的两款水上摩托的使用情况分别抽取了50辆进行统计使用年限如条形图所示已知每辆水上摩托从购入到淘汰平均年收益是0.8万元若用频率作为概率以每辆水上摩托纯利润纯利润=收益﹣购车成本的期望值为参考值则该娱乐场的负责人应该选购I型水上摩托还是Ⅱ型水上摩托 附回归直线方程为其中.
在直角坐标平面内以坐标原点O为极点x轴的非负半轴为极轴建立极坐标系.已知点AB的极坐标分别为曲线C的参数方程为为参数. Ⅰ求直线AB的直角坐标方程 Ⅱ若直线AB和曲线C只有一个交点求r的值.
如图已知P0为椭圆Ca>b>0的右焦点B1B2A为椭圆的下上右三个顶点△B2OF与△B2OA的面积之比为. I求椭圆C的标准方程 Ⅱ试探究在椭圆C上是否存在不同于点B1B2的一点P满足下列条件点P在y轴上的投影为QPQ的中点为M直线B2M交直线y+b=0于点NB1N的中点为R且△MOR的面积为.若不存在请说明理由若存在求出点P的坐标.
下列关于实验的叙述正确的是
湿地生态系统在净化水质方面具有重要作用如图表示北京某地区建造的人工湿地基质层由土壤和各种填料组成有机物含量高的生活污水通过该湿地可被净化输出.下列关于该生态系统的叙述不正确的是
大型肉食性动物对低营养级肉食性动物与植食性动物有捕食和驱赶作用当某种大型肉食性动物迁入到一个新的生态系统时下列情况不会出现的是
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