A sphere
A pentagon is a two dimensional polygon. As such it has no faces, because a face is a flat surface and two dimensional objects have no surface. It does have five edges and five vertices.
none its a sphere just look at one and you can tell
It does not have a flat surface.
A flat surface, like a sheet of paper, with no edges (ie: it goes on and on and on and on....) or boundaries. What you're describing is a 2 dimensional plane. No, not plane like an airplane. A plane is simply a flat "sheet" that goes on forever in 2 dimensions: left/right (wide) and up/down (tall).
A plane is a flat surface with no thickness
A base!
sphere
If the closed lunch box can be approximated by a cuboid, the answer is 6 faces, 8 vertices (not verticles) and 12 edges.
3 faces, 2 edges, no vertices
32
12 edges, 8 vertices, 6 faces.
A plane
5
A triangular prism
99.9999% no, when flipped onto a flat surface.
a cone has one flat surface one vertex and no edge.
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.