Development

When I started sketching some concepts, I sketched the top structure.  It could be created using lines or using triangles.  I quite like how it gives perspective and is making a 2d shape, look 3d.
Then I thought it could look quite interesting if I repeated that pattern from each side of the square, which created the bottom structure.  This gives the symmetry I was looking for.

I then created this in processing and this is the design which came out of it.  I really like this idea so want to create my 8 structures, similar to this one. 

The above design on processing: http://www.openprocessing.org/visuals/?visualID=31980

To keep the 8 designs consistant but different I thought about using triangles and lines still, but just changing the values, thicknesses etc of the above structure.  But when I tried it out, it didn't turn out how I hoped.  So I thought instead of sticking to one shape I could keep the same star like pattern but just change which shape creates the pattern.  So in the sketches above I sketched some shapes I could use, that when repeated from all four sides of the square would create this star like structure.

After I created all 8 of my structures I then realised that in the brief it says the structures are meant to be rectangle and printed 10cm by 20cm, not square like I'd created.  I thought about stretching the designs like above.  Which I think looks good with this structure, but with some of the others it didn't work.

Therefore I decided to not stretch them, to just cut them in half.  It still has symmetry, and it makes the design, I think even more interesting.