I need to calculate the edges betwen edges unfortunately I's no math wiz.
Anyway the MEL angle command calculates the angle between two vectors but I guess this command presumes that the origin of both these "edges" is 0,0,0 whereas if you are workign with two edges on a model their origin would be something in worldspace.
So I guess before I could use the angle command I would have to offset the origin of the vectors to zero them out first.
Basically I need a function that will tell me if the angles or more or less than 90 degrees.