How to calculate the golden section? How much is it? Forget it

How to calculate the golden section? How much is it? Forget it

It is called golden section when the length is about 0.618 of the whole length. This section point is called golden section point. It divides a line segment into two parts, so that the ratio of one part to the whole length is equal to that of the other part to this part. The ratio is an irrational number, which is shown as √ 5-1 / 2 in the score table, The approximate value of the first three digits is 0.618. Because the shape designed according to this proportion is very beautiful, it is called golden section, also known as the ratio of middle to outer

Is 0.618 the golden section?

Yes

Who taught me how to find the golden section
I mean to look for a place or an object

When you see an object, find the midpoint first, and then move a little on the Internet. That's the golden section. As time goes by, you get used to it