It is a polygonal prism.
A three dimensional figure with polygonal faces is called a polyhedron. Specific names draw from the Latin prefixes. For example a four sided figure is a tetrahedron.
A polyhedron.
A polyhedron
Prism
No. All the faces of a Platonic solid are identical regular polygons.
It is a polygonal prism.
In geometry an Archimedean solid or semi-regular solid is a semi-regular convex polyhedron made of two or more types of regular polygons meeting in identical vertices.
There cannot be a solid three sided figure. A solid 4 sided object is a tetrahedron.
A pyramid
A three dimensional figure with polygonal faces is called a polyhedron. Specific names draw from the Latin prefixes. For example a four sided figure is a tetrahedron.
A prism is a generic term. It describes a solid shape bounded by two congruent polygons (with n sides each), and n rectangles joining them together. The prism is names after the shape of the two polygons. A prism with an n-sided polygon as base has 2n vertices.
A polyhedron.
The faces of Platonic solids are regular polygons...
A polyhedron
Octagon
a polyhedron