I have a model made entirely of flat planes. Let's use a 3-sided pyramid as a simple example.

I want to print the outline (edges) of each plane in actual size so I can use it as a template for cutting each plane out of a sheet of wood.

I assume showing edges only and exporting as AI is my best option.

My question is how to obtain flat outlines of planes that are tilted (such as sides of a pyramid).