They can but need not.
Not necessarily.
A regular dodecahedron, for example. Each face is a regular pentagon so no face has parallel sides. However, the edges on opposite faces are parallel to one another.
A dodecahedron can have 18 to 30 edges.
Yes! a Dodecahedron has parallel faces.
dodecahedron * * * * * A dodecahedron has 12 FACES, not 12 edges!
A dodecahedron has 0 parallel faces
A dodecahedron need not have any parallel lines.
22 edges.
it has 30 edges
When you say "sides", do you mean faces or edges? A dodecahedron has 12 faces and 30 edges.
Dodecahedron.
30