用80厘米长的铁丝围成一个最大的正方形，这个正方形的边长是______厘米．
80÷4=20（厘米）；
答：这个正方形的边长是20厘米．
故答案为：20．
实施地图概括的四个步骤（）、简化、夸张和（）。
The villager told them that his village was ______ that of theirs.
A．three times larger than B．as large as three timesC．three times as larger as D．three times size of
