分割图形是件有趣的事,不仅能考我们的脑力,也能考我们的眼力。比如有人出了这样一道题:请你把一个等边三角形分成8个或9个形状、大小都一样的小三角形。8个或9个太多,较难分好。我们可以先少分一点儿来考虑,比如,分成2个、3个、4个,就很容易,如下图:看着这几个图,再思索下一步怎么分。比如由4个小三角形就很容易想到8个小三角形的分法:再把每一个小三角形分成两个形状、 Dividing graphics is a fun thing, not only to test our brainpower, but also to test our eyesight. For example, someone came out with such a question: Please split an equilateral triangle into eight or nine small triangles with the same shape and size. 8 or 9 too much, more difficult to score good. We can first consider a little less, for example, divided into 2, 3, 4, it is very easy, as shown below: Look at these figures, and then consider how the next step. For example, by the four small triangles it is easy to think of eight small triangles of points: Then each small triangle is divided into two shapes,