2 inside and outside
A cylinder has two sides - an inside and an outside
A cylinder has three sides and no corners.
Cylinder shapes only have three sides.
There are 2 completely flat sides on every cylinder.
Two sides and no edges!
1
none
none
The base has three sides.
the pyramide rectangular base has 12 sides.
In a virtual 3D environment a cylinder can have as many sides as it take for it to look convincing. Though for optimization purposes the fewer the better.
3 sides