满分5 >
初中数学试题 >
下列食品商标中,既是轴对称又是中心对称图形的是( ) A. B. C. D.
下列食品商标中,既是轴对称又是中心对称图形的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190542247120580/SYS201311011905422471205001_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190542247120580/SYS201311011905422471205001_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190542247120580/SYS201311011905422471205001_ST/images2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190542247120580/SYS201311011905422471205001_ST/images3.png)
考点分析:
相关试题推荐
-5的相反数是( )
A.5
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190542247120580/SYS201311011905422471205000_ST/0.png)
C.-5
D.
查看答案
如图,平行四边形ABCD中,AB=4,点D的坐标是(0,8),以点C为顶点的抛物线y=ax
2+bx+c经过x轴上的点A,B.
(1)求点A,B,C的坐标;
(2)若抛物线向上平移后恰好经过点D,求平移后抛物线的解析式.
查看答案
如图,AB是⊙O的直径,弦CD⊥AB与点E,点P在⊙O上,∠1=∠C,
(1)求证:CB∥PD;
(2)若BC=3,sin∠P=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190542247024107/SYS201311011905422470241023_ST/0.png)
,求⊙O的直径.
查看答案
如图,在△ABC中,∠ACB=90°,BC的垂直平分线DE交BC于D,交AB于E,F在DE上,且AF=CE=AE.
(1)说明四边形ACEF是平行四边形;
(2)当∠B满足什么条件时,四边形ACEF是菱形,并说明理由.
查看答案