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勾股定理(a2+b2=c2)是几何中最重要和最基本的定理之一,1971年,尼加拉瓜发行了一套10枚的邮票,把勾股定理列为改变世界的最重要的十大数学定理之一(图1)。
Pythagorean theorem (a2 + b2 = c2) is one of the most important and fundamental theorems in geometry. In 1971, Nicaragua issued a set of 10 stamps, listing the Pythagorean Theorem as the most important top ten in changing the world One of the mathematical theorems (Figure 1).