满分5 >
初中数学试题 >
如图,将矩形纸片ABCD沿EF折叠,使得点C落在边AB上的点H处,点D落在点G处...
如图,将矩形纸片ABCD沿EF折叠,使得点C落在边AB上的点H处,点D落在点G处,若∠AHG=40°,则∠GEF的度数为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740009_ST/images0.png)
A.100°
B.110°
C.120°
D.135°
考点分析:
相关试题推荐
某款手机连续两次降价,售价由原来的1185元降到580元.设平均每次降价的百分率为x,则下面列出的方程中正确的是( )
A.1185x
2=580
B.1185(1-x)
2=580
C.1185(1-x
2)=580
D.580(1+x)
2=1185
查看答案
如图所示,菱形花坛ABCD的边长为6m,∠B=60°,其中由两个正六边形组成的圆形部分种花,则种花部分的圆形的周长(粗线部分)为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740007_ST/images0.png)
A.12
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740007_ST/0.png)
m
B.20m
C.22m
D.24m
查看答案
张大伯有事想打电话,但由于年龄的缘故,电话号码(萧山区的家庭电话号码是8位)中有一个数字记不起来了,只记得8899*179那么他随意拨了一个数码补上,恰好打通的概率是( )
A.1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740006_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740006_ST/1.png)
D.
查看答案
将方程x
2+4x+1=0配方后,原方程变形为( )
A.(x+2)
2=3
B.(x+4)
2=3
C.(x+2)
2=-3
D.(x+2)
2=-5
查看答案
把不等式组
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740004_ST/0.png)
的解集表示在数轴上,正确的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740004_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740004_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164010230374059/SYS201310221640102303740004_ST/images3.png)
D.
查看答案