A 3d shape can have infinite sides
sides are the face of a 3d shape and verticies are the corner of the shape
square
That is a Dodecahedron.
A septadecahedron has 17 sides to it.
Pentadecagon; Pentakaidecagon
2D shape = Decagon 3D shape = Decahedron
Such a shape cannot exist because it is always possible to increase the number of sides by 1 by simply cutting off one vertex.
dodecahedron
triangular pyramid.
Tetrahedron
Dodacohedron, I think.