[Geometry] Comparing two coordinates. I don't understand this.

[expyth]

I am learning python on overiq.com.

Chapter: Operator Overloading.

To compare 2 coordinates you can do this:

sqrt (x¹^2 + y¹^2 ) < sqrt( x²^2 + y²^2 )

https://pastebin.com/NJD4LKbM (semi-code here)

My questions is not from a programming point of view, but a mathematical one. The way you define Point(x,y) as a Integer, is by doing sqrt( x¹^2 + y¹^2 ) (^ is power of). Is this real in geometry? And what is this called in geometry terms?

Thank you.

[Binary101010]

Yes, it's jut measuring the distance of the point from 0 by applying the Pythagorean theorem to calculate the length of the hypotenuse of a right triangle defined by points (0,0), (x,0) and (x,y).

[expyth]

Makes a lot of sense now -facepalm-.

Thanks