Yeah thanks heaps for answering it but due to time constraints i had to figure it out quickly and after four hours of trying i decided it was bed to to which the answer quickly jumped in my head. My way of solving it was that due to the base being 12, then the golden that came off it gave us the radious of the circle. So then the golden gnomon which has the arc situated within it height was able to be found to be 7.04cm, so therefore 2 golden gnomons the same size would give a height of 14.08 therefore the arc could not pass through the fourth vertex. Im sorry i wasnt able to upload a photo, my internet was being really slow that nite and really annoying :/


Thats what the spiral looked like anyways. Thanks heaps for your help and your time though, much appreciated