A:She played football.
B:She played tennis.
C:She wrote a letter.。
特殊网图
结点数(V)
4
6
9
12
网眼数(F)
1
2
边数(E)
7
☆
表中“☆”处应填的数字为____;根据上述探索过程,可以猜想V,F,E之间满足的等量关系为____;
如图2,若网眼形状为六边形,则V,F,E之间满足的等量关系为____.
A:____ ____your library?
B:No, ____ ____.