A circle!
It is a cylinder
A cylinder
the solid that has two circular bases is a cylinder
a cylinder does have 2 bases A cylinder has two bases.
the bases of a cylinder are both circles
a cylinder
A cylinder has circular parallel bases
A cylinder has 2 circular equal opposite parallel bases
The cylinder and the prisms bases are similar because its a flat surface.
the sphere doesn't have a base because it's all round
A right circular cylinder has two bases. If you consider these bases to be faces, then the is yes.
Congruent, parallel and disc, all best describe the bases of a cylinder.