Geometry has always been present in art. Using examples in art is just not gonna get you anywhere.

And I will explain the concept of the golden number. What is the number that, minus one, equals its inverse?

At a quick glance, you can see it's a number between 1 and 2. You can put that concept in an equation, and you get:

x - 1 = 1/x
solving the equation:
x² - x - 1 =0
That seems a rather bizarre way to think about it. Which first principles would lead you to derive that form of the equation?

As far as my knowledge goes the golden ratio is defined so that the ratio of a section of a line to the longer section of the line equals the ratio of the longer section to the total length of the line, which leads directly to

x = (1 + x)/x => x2 - x - 1 = 0

Why would you start from "the number that, minus one, equals its inverse"?
the information xei is only a click away. just visit the website I posted.
The site was full of anecdotes, not evidence, and contained information which I personally know to be completely wrong.

For example: "many crop circles include ellipses instead of circles, which are impossible to construct adequately with ropes". This is complete and utter rubbish, it's a very well known mathematical result that you can construct an ellipse extremely easily using a loop of rope and two fixed points.
the other is an image of a crop circle in the form of mandelbrot
Okay. What is the Mandelbrot set?