How many bases does a triangular pyramid have?

Answer 1

https://www.mathsisfun.com/geometry/triangular-pyramid.html

Answer 2

I am still a little confused. Does this mean that there is only one base? The problem I am doing is on lateral area, I know how to do lateral area but I'm not sure whether every face is a base because they are all identical or if just one of the faces is a base.

Answer 3

It looks to me as though they are all bases.

Answer 4

so the lateral area would be zero?