A dodecahedron can have 18 to 30 edges.
dodecahedron * * * * * A dodecahedron has 12 FACES, not 12 edges!
it has 30 edges
22 edges.
When you say "sides", do you mean faces or edges? A dodecahedron has 12 faces and 30 edges.
Dodecahedron.
30
They can but need not.
24 edges.24 edges.24 edges.24 edges.
Not necessarily.
A dodecahedron has 20 corners/vertices, 30 edges and 12 faces.
A polyhedron with 12 faces.
The snub dodecahedron is an Archimedean solid consisting of 92 faces (80 triangular, 12 pentagonal), 150 edges, and 60 vertices.