右图是一个十字形的纸片,它由五个相等的正方形组成。把纸片沿一条直线裁成两半,然后再把其中的一片沿着另一条直线裁成两半,将所得的三部分适当地拼起来,就构成两个并列的正方形。(答案见下期) The image on the right is a cross-shaped piece of paper consisting of five equal squares. The paper is cut into two halves along a straight line, and then one of them is cut into two halves along another straight line. The three parts are properly put together to form two parallel squares. (The answer is in the next issue)