ok you can make a triangle by starting with one line then putting infinity progesively smaller lines next to it in the 2nd dimension. you can make a pyramid by starting with a square and putting infinity progresively smaller squares on top of it in the 3rd dimension...
but what about putting together a 4d pyramid... is it like the cube shifted in the 4d to make a tesseract, only when its shifted it gets progressively smaller? in essence like stacking infinent progressivly smaller cubes in the 4th dimension?
if so what would a 4d pyramid look like?