Unit 14 Vocabulary

the perpendicular segment that joins the planes of the bases in a prism or cylinder and joining the vertex to the plane of the base in a pyramid or cone.

• Pyramid

• Edge

• Altitude

• Right Cone

Some surfaces of a three-dimensional figure are also called bases. For example, The two parallel faces of a prism are the bases.

• Base

• Face

• Edge

• Cube

the point from which all points on a sphere are equidistant

• Sphere

• Center of a Sphere

• Cross Section

• Radius of a Sphere

the circumference of any great circle of the sphere

• diameter of a sphere

• Center of a sphere

• Sphere

• Circumference of a sphere

A three-dimensional figure with one base, which is a circle, and a vertex that is not in the same plane as the base.

• Cone

• Pyramid

• Cylinder

• Sphere

the intersection of a solid and a plane that slices through the solid

• Net

• Cube

• Cross Section

• Slant Height

polyhedron with 6 faces each of which is a square

• Cube

• Prism

• Pyramid

• Volume

a three-dimensional figure that has two congruent parallel faces (bases) which are circles

• Cube

• Cylinder

• Pyramid

• Right Cylinder

a segment passing through the center of a sphere with endpoints on the sphere

• Diameter of a Sphere

• Center of a Sphere

• Circumference of a Sphere

• Radius of a Sphere

segment that is formed by the intersection of two faces of a polyhedron

• Height

• Base

• Face

• Edge