Hi everyone, I wonder if anyone could help me with this:

Imagine you have a triangular shape whose shape would change over time, e.g. base gets shorter and height gets bigger, in a non-linear fashion (probably gets exponentially shorter/bigger, or follows some other function other than an exponential). Is there anyway to find a model or to describe this sort of behaviour?

I've stumbled upon geometry and transformations, which seem to be able to deal with this. I'm not a mathematician nor anything close to that, so this might be a really dumb question (or in the wrong section of the forum). Anyway, any help would be extremely appreciated!

Cheers