满分5 >
初中数学试题 >
如图,⊙O是等边三角形ABC的外接圆,⊙O的半径为2,则等边三角形ABC的边长为...
如图,⊙O是等边三角形ABC的外接圆,⊙O的半径为2,则等边三角形ABC的边长为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267006_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267006_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267006_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267006_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267006_ST/3.png)
考点分析:
相关试题推荐
下列成语所描述的事件是必然发生的是( )
A.水中捞月
B.拔苗助长
C.守株待兔
D.瓮中捉鳖
查看答案
已知△ABC和△A′B′C′是位似图形.△A′B′C′的面积6cm
2,周长是△ABC的一半.AB=8cm,则AB边上的高等于( )
A.3cm
B.6cm
C.9cm
D.12cm
查看答案
使分式
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267003_ST/0.png)
有意义的x的取值范围是( )
A.x≥
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267003_ST/1.png)
B.x≤
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267003_ST/2.png)
C.x>
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160416037326756/SYS201310221604160373267003_ST/3.png)
D.x≠
查看答案
已知等腰三角形的一个内角为40°,则这个等腰三角形的顶角为( )
A.40°
B.100°
C.40°或100°
D.70°或50°
查看答案
某反比例函数的图象经过点(-2,3),则此函数图象也经过点( )
A.(2,-3)
B.(-3,-3)
C.(2,3)
D.(-4,6)
查看答案