a prism
A prism.
It is a prism. More specifically, "A solid figure that has two bases that are parallel, congruent polygons and with all other faces that are parallelograms." This describes the general prism. Replace "polygons" with "triangles" and you have specified a triangular prism.
It is a pentagonal prism
They are prisms.
A solid figure that has two congruent polygons as bases and lateral faces that are rectangles is called a prism. In a prism, the two bases are parallel and congruent, while the lateral faces connect the corresponding sides of the bases and are rectangular in shape. The type of prism is often specified by the shape of its bases, such as triangular prism or rectangular prism.
A prism.
It is a prism. More specifically, "A solid figure that has two bases that are parallel, congruent polygons and with all other faces that are parallelograms." This describes the general prism. Replace "polygons" with "triangles" and you have specified a triangular prism.
It is a pentagonal prism
Prism!
They are prisms.
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They are prisms. The bases may be any polygons with three or more sides.
It is called a prism.
A solid figure that has two congruent polygons as bases and lateral faces that are rectangles is called a prism. In a prism, the two bases are parallel and congruent, while the lateral faces connect the corresponding sides of the bases and are rectangular in shape. The type of prism is often specified by the shape of its bases, such as triangular prism or rectangular prism.
A PRISM is a solid whose side faces are parallelograms and whose ends(or bases ) are congruent parallel rectilinear figures.
The faces of Platonic solids are regular polygons...
A polyhedron.