This is the general theory of my problem.

 I have a 2D rectangle geometry . The sides of the triangle have length (A) and Height (B).I want to run a series of combinations of different lengths and heights without having to go back to the sketch geometry every iteration and change these dimensions, then re-mesh the geometry. 

Is there a way to automate this process? I was thinking that I may have to write a python script for the process but I was wondering if that truly is the best way to approach this problem. If scripting is there best option, has anyone done a similar process that they could advice me on or link studies to me? 

Thanks for any thoughts or comments