如下图①准备一张正方形的纸。
screen.width-500)this.style.width=screen.width-500;" border="0">①
如图②对折:screen.width-500)this.style.width=screen.width-500;" width="120" border="0" height="180" hspace="0"> ②
如图③在折的部分再对折: screen.width-500)this.style.width=screen.width-500;" border="0">
将纸连续共折成为十等份screen.width-500)this.style.width=screen.width-500;" border="0">
screen.width-500)this.style.width=screen.width-500;" border="0">
(3)按照下图的圆弧线剪下,注意:下剪和收剪时剪刀要与折边垂直!screen.width-500)this.style.width=screen.width-500;" border="0">
(4) screen.width-500)this.style.width=screen.width-500;" border="0">
(5) 展开后就是下图的圆了。 screen.width-500)this.style.width=screen.width-500;" border="0">
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