Assuming that a space figure means a 3-dimensional object, the answer is a square based pyramid.
a cube, or hexahedron.
rectangle
cylinder
It is a cylinder.
The point at which there establishes one to one correspondence between two entities is ideally the 'congruent point'. ex: Two line segments are congruent if they have the same length, two angles are congruent if they have the same measure, two polygons are congruent if all the corresponding sides and angles are equal.
Sounds like a Cube
Cylinder
A triangular prism seems to fit the given description
A simple polygon is a closed, straight-sided figure in which the sides do not overlap.
An impossible figure in two dimensional space. A Dacagon has ten sides and must have ten angles.
the symbol for congruent is ~ with _ in the same space. (US keyboard does not have a congruent key
The answer depends on the dimensions of the shape. Plane shapes - flat shapes in 2-dimensional space - will have the same number of vertices as sides. However, that is not the case with solid shapes.