以一个基本数(基准量)为基础,另一个数(相比较的量)的比值叫作比例或者比。在多种多样的比例关系中,有一种比例关系非常完美,这就是黄金比例,也叫作黄金分割。把一条线段分割为两部分,较短部分与较长部分长度之比等于较长部分与整体长度只比,其比值约为0.618。设一条线段AB的长度为a,c点在靠近B点的黄金分割线上,且AC为b,则a比b就是黄金数。 Based on a base number (base amount), the ratio of another number (comparative amount) is called the ratio or ratio. In a variety of relations of proportion, there is a very perfect ratio, which is the golden ratio, also known as the golden section. Dividing a line segment into two parts, the ratio of the shorter part to the longer part is equal to the ratio of the longer part to the overall length, which is about 0.618. Suppose the length of a line segment AB is a, c is on the golden line near B, and AC is b, then a is greater than b.