五角形的問題

yung0506

如5.39.217.76; V) u7 S5 N% w

6 n0 ~9 w/ n, E1 k5.39.217.76有幾多個五角形?tvb now,tvbnow,bttvb4 i7 U. r7 _# W" E# ?. o9 a
- R" \/ z) P( u% u  n" s9 @' w. U+ l
答案5.39.217.76& K3 b8 X9 ^: o* d5 @
5.39.217.76, z' Y' O5 r* l( D" D. G
12個,