大家都知道,在一个直角三角形中,斜边的平方等于两条直角边平方的和。这是有名的勾股定理。我们通常把斜边设作 c,两直角边分别设为 a、b,那么,根据定理得:c~2=a~2+b~2,也就是弦~2=勾~2+股~2。而 a、b、c(勾、股、弦)这一组勾股数的正整数组必定满足上列等式。经常提到的勾3、股4、弦5就是勾股数中最小的一组。这里介绍勾股数的另一些有趣特点。 As we all know, in a right-angled triangle, the square of the hypotenuse equals the sum of the squares of two right-angled sides. This is the famous Pythagorean theorem. We usually set the hypotenuse as c and the two right-angled edges as a and b, respectively. Then, according to the theorem, we get c 2 = a 2 + b 2, that is, chord 2 = hook 2 + . And a, b, c (hooks, shares, strings) This group of the number of positive integer group must satisfy the above equation. Often referred to the hook 3, Unit 4, String 5 is the smallest group of the Pythagorean. Here are some other interesting features of Pythagorean numbers.