When a base is congruent it is the same shape and size, and parallel is when they will never touch. Therefore, on a square the top and bottom are congruent parallel bases. Some other examples are: Cylinders, rectangular prisms, and of course parallelograms.
A prism has two congruent parallel bases.
An upright pentagonal prism has two congruent parallel bases and 15 edges.
Congruent
a cylinder
Congruent
A prism has two congruent parallel bases.
Both a cylinder and a prism can have parallel and congruent bases.
parallelogram, because if the two bases are congruent and parallel then the sides will also have to be parallel, so it is a parallelogram
Most things do not have two congruent parallel bases. I do not, by desk does not, my lap top does not, etc etc.
An upright pentagonal prism has two congruent parallel bases and 15 edges.
prism
no
A square.
Its "bases"
A prism
A cylinder
A cylinder