A pentagon is a polygon that has 5 sides, 5 vertices and a flat face
none its a sphere just look at one and you can tell
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).
It does not have a flat surface.
A plane is a flat surface with no thickness
If the closed lunch box can be approximated by a cuboid, the answer is 6 faces, 8 vertices (not verticles) and 12 edges.
A base!
sphere
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.