In the supermarket the other day I changed the habit of a lifetime by abandoning my usual tea brand of Tetley in favour of a box of PG Tips. I'm not entirely sure why I did this, but I may have been nostagically reminiscing about about the antics of those hapless chimps on the adverts of years ago; I don't think they ever managed to get that piano shifted.
Another aspect to this is the fact that I would be treated to a technologically superior brew due to their use of pyramid shaped teabags. Giddy with anticipation I opened the pack, pulled out a teabag and regarded its distinguished design. You can imagine my ire and disappointment when I realised that it had a triangular rather than square base and was therefore a tetrahedron rather than a pyramid.
I firstly vowed never to buy anything off the back of a chimpanzee's recommendation again. That had happened once too often now for my liking.
Secondly I thought I'd compose a stern email to PG Tips, the utter charlatans. Fortunately before doing so I consulted the internet and in doing so found out that pyramid can have any number of different shapes as a base, triangles, hexagons, decagons, you name it, it can be done.
Feeling somewhat appeased I calmed down and had a cup of tea, which for the record was fairly decent.
tl;dr pyramids can be different shapes.