生活中我们常常相信亲眼所见，但又常常为自己的眼睛所骗，魔术就是一个很好的例子．数学中也有这种欺骗我们眼睛的奇妙的魔术！先请看这样的问题１：在下面两个图形中，如果将图１中的四块几何图形裁剪开来重新拼接成图２，我们将会发现，与图１相比，图２多出了一个洞！这怎 In life we ​​often believe in what we see in person, but we often deceive our own eyes. Magic is a good example. In mathematics, this wonderful magic that deceives our eyes! Let’s look at this problem first. In the following two figures, if the four geometric figures in Figure 1 are cut and reassembled into Figure 2, we will find that Figure 2 is more than Figure 1. A hole! How can this be