看到这个上海6年级竞赛题，看你们谁能做出来！！？？

来源: 于 2012-03-23 14:30:02 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

i cannot draw, but imagine a perfect square with a corner cut off (about 1/4 of the length on each of the two adjacent sides), the question is: 

add one(1) straight line to the pattern, and devide it into (2) triagles.

hint/ think out of box