3D Figures

I am a 3D figure. I have 1 circular base and an apex. What am I?

I am a 3D figure. I have 2 circular bases. I have no vertices. What am I?

I am a 3D figure. I have 6 faces. I have 8 vertices. I have 2 square bases and 4 rectangular faces. What am I?

I am a 3D figure. I have no bases, edges or vertices. What am I?

I am a 3D figure. I have 4 triangular faces and a square base. I have an apex. What am I?

I am a 3D figure. I have 6 square faces. I have 8 vertices. I have 12 congruent and straight edges. What am I?

I am a 3D figure. I have 3 rectangular faces and 2 triangular faces. I have 6 vertices. I have 9 straight edges. What am I?

I am a 3D figure with faces that are all polygons.

I am a polyhedron with 2 congruent polygon bases. All of my other faces are rectangles.

I am a polyhedron with one polygon base. All of my other faces are triangles and they meet at an apex.