2010-09-08 09:01:04 +0800 #1
有两个面平行，其余各个面都是平行四边形的空间几何体是不是棱柱？
FAQ
There are three kinds of people: Those who can count and those who can't.
2010-09-08 09:01:04 +0800 #2
2010-09-08 09:01:04 +0800 #3
是
2010-09-08 09:01:04 +0800 #4
…………
不是的，如下
[/img]: ][img
There are three kinds of people: Those who can count and those who can't.
不是的，如下
[/img]: ][imgThere are three kinds of people: Those who can count and those who can't.
2010-09-08 09:01:04 +0800 #5
此问题，论坛上早早就讨论过了的
可搜一下
杏坛@蜗牛
可搜一下
杏坛@蜗牛
