It has 7 vertices
A septagon or an heptagon has 7 vertices and 7 sides
it has 4 vertices
a trapezoid has 4 vertices
it has 7 vertices
A cudoid dose have no vertices. However, a cuboid does have 8 vertices.
A cube has 8 vertices.
A rectangular prism has 8 vertices.
None. A non-existent pyramid has no vertices.
5
A 7 sided polygon is called a heptagon or a septagon.
I believe a cubic rectangle has four vertices
16 edges, 9 vertices.