6.
I'm learning geometry in school so I believe its 6.
a triangular prism has to triangular bases while a rectangular prism has a rectangle as the bases.
6
There are 6 bases
62 bases
It depends on what kind of prism you mean. For example, a rectangular prism has 6 bases and a triangular prism has 5 bases. A triangular prism only has two bases.
One base
none
A rectangular cube (a cuboid) is a kind of prism and, by convention, prisms have two bases.
Rectangular prism
rectangular prism
Both have rectangular bases.
four