數學火柴問題，如何可以用12根火柴拼出六個正方形(必須在平面

_ _ _ _ _ _ _ _ _ _
|................. |......|
|..................|......|
|..................|......|
|........._ _ _..|..__|
|.........|........|......|
|_ _ _..| _ _ .|......|
|.........|...............|
|_ _ _..|_ _ _ _ _..|

不要理那些 .....

如果要清楚， plz email me

2009-12-22 17:38:09 補充：
I can send you by email, because cannot upload picture here..
Can you leave your email?

thanks