You will get a smaller pentagon and it will be inverted relative to the original.
A pentagon.
A diagonal
A pentagon
Maybe line segment.
I believe it may be called a diagonal.
A pentagon?
A pentagon
A pentagon
If you mean vertices, a pentagon.
A regular or irregular pentagon
A pentagon.
A pentagon has five sides and five vertices
A diagonal
A pentagon
The 3-d figure formed from regular pentagons is the dodecahedron which has 20 vertices.
Maybe line segment.
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.