IVT GIF Explanation

This gist was made for ...

We start by taking a random point A on the curve, and drawing a random line passing through it. 
The line divides the curve into two parts.
Let’s name the parts R(for Red) and G(for Green). 
As we rotate the line about A, the size of R and G changes. 
	R goes from 0 -> 1, while
	G goes from 1 -> 0
Thus, there must be some point where they are equal. We can say this because "area is continuous" under rotation.
	R = G for some rotated line passing through A. 
But, the total area of the curve can be written as, 
	Area of Curve = R + G
Thus, R = G = 0.5 * (Area of Curve)