Here is mine:
HYCCT1105 - In Circles by etsdas - Cards and Paper Crafts at Splitcoaststampers
I am unable to quote (computer issue) but will pitch in with my take on an answer for Amy. First of all, you might want to click on the link in jpmayo's challenge post (#1 above) to check out other cards in this particular gallery. I have not yet done so - but usually you find some variation on size and even layout - but a basic following of, as you mentioned, the two triangles and two circles. There will be different embellishments. Someone more knowledgeable than I will certainly chime in.