完美正方形是把正方形分割为若干个边长不等的小正方形。如果其中任何一部分小正方形都无法构成一个矩形或正方形，则称为简单完美正方形，否则称为复合完美正方形。目前已知最小的简单完美正方形由21个小正方形组成，由A. J. W. Duijvestijn用计算机发现。最小的复合完美正方形则由24个小正方形组成，由T.H. Willcocks发现。
他给你画的肖像可能完全像你，也可能全是些线条、正方形、圆圈和色彩怪异的各种图形，可能看起来根本不像人。
If he had painted a picture of you it might have looked exactly like you. Or it might have been all lines, squares, circles and strange-colored shapes.
他给你画的肖像可能完全像你，也可能全是些线条、正方形、圆圈和色彩怪异的各种图形，可能看起来根本不像人。
Or it might have been all lines, squares, circles and strange-colored shapes. It might not have looked human at all.
这是两个规律，完全是从广泛的水平线下更改为正方形，然后垂直线。
These two are regular patterns but are changing from wide horizontal lines down to squares and then to vertical lines.
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