我们走正方形步过去。
那么现在我们对原来的图像有了进一步的认识但是我们仍然，不知道它的横截面是否是圆，正方形或者其他的样子，因此我们需要进一步的确认。
So, we are starting to have a slightly better idea but we still don't know whether the cross section of this thing might be round, square, something else. So, it wants more confirmation.
下一步也还是泛化。这次就是不光要画正方形了，要画一个多边形，可以指定边数的。下面是样例。
The next step is also a generalization. Instead of drawing squares, polygondraws regular polygons with any number of sides. Here is a solution.
第一步，隔板与网身应呈90度相交，用绑扎绑成构成长方形或正方形网垫。
The first step, the partition and the net should be a 90 degree intersection, with the binding ties constitute a rectangular or square mat.
在解决生活中实际问题的过程中，进一步掌握长方形和正方形的周长、面积及相关问题的计算方法。
Solve the daily problems to further grasp the formula of area and perimeter of rectangle and square.
第一步是用默认设置画一个大四方形，然后保存一下状态。
The first step is to draw a large rectangle with the default settings.
现在你必须做这一点点步骤：在最高的上述“圆周”和“线”和它的“长方形”上面看“开始新的形状。”
Now you have to do this little step: Look up top above "Circle" and "Line" and "Rectangle" where it says "Start New Shape."
现在你必须做这一点点步骤：在最高的上述“圆周”和“线”和它的“长方形”上面看“开始新的形状。”
Now you have to do this little step: Look up top above "Circle" and "Line" and "Rectangle" where it says "Start New Shape."
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