WORDS Base of a cone Oblique cone Base of a pyramid Oblique cylinder Bases of a cylinder Polyhedron Bases of a prism Prism Cone Pyramid Cross section Rectangular prism Cube Right circular cone Cylinder Right circular cylinder Lateral faces of a prism Right rectangular prism Lateral faces of a pyramid Right pyramid
Base of a pyramid
o The face that does not intersect the other faces at the vertex. The base is a polygonal region.
Bases of a cylinder
o The two congruent and parallel circular regions that form the ends of the cylinder.
Bases of a prism
o The two faces formed by congruent polygons that lie in parallel planes, all of the other faces being parallelograms
Polyhedron
A collection of polygons joined at their edges. Each of these polygons is called a “face.”
Prism
A polyhedron with two parallel and congruent faces and all other faces that are parallelograms.
Pyramid
o A pyramid is a polyhedron with one face (the “base”) a polygon and all the other faces triangles meeting at a common point called the vertex.
Right circular cone
o A cone with a circular base and with a vertex that is aligned directly above the center of the base.
Right circular cylinder
o A cylinder with circular bases that are aligned one directly above the other.