base The two congruent, parallel faces on a prism or cylinder, or the bottom face of a pyramid or cone.
center The given point from which all points on a sphere are the same distance.
cone A three-dimensional figure with curved surfaces, a circular base and one vertex.
cubic units Used to measure volume and tells the number of cubes of a given size that will fill a three-dimensional figure.
cylinder A three-dimensional figure with all curved surfaces, two circular bases and no vertices.
edge The intersection of faces of a three-dimensional figure. (a line)
face The flat surface of a three-dimensional figure.
height The shortest distance from the base of a parallelogram to its opposite side.
lateral face A side of a three-dimensional figure that is not a base.
prism A three-dimensional figure that has two parallel and congruent bases in the shape of polygons and at least three lateral faces shaped like rectangles. The shape of the bases tells the name of this figure.
pyramid A solid figure that has a polygon for a base and triangles for sides. It is named for the shape of its base.
sphere A three-dimensional figure with no faces, bases, edges, or vertices. All of its points are the same distance from a given point called the center.
surface area The sum of the areas of all the surfaces (faces) of a three-dimensional figure.
three-dimensional figure A figure that encloses a part of space.
vertex (vertices) The point where three or more edges of a three-dimensional figure intersect.
volume The amount of space that a three-dimensional figure contains. It is expressed in cubic units.
plane A two-dimensional flat surface that extends in all directions.
solid A three-dimensional figure.
polyhedron A solid with flat surfaces that are polygons.
square units Used to measure area of a 2-dimensional figure or surface area of a 3-dimensional object.
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base The two congruent, parallel faces on a prism or cylinder, or the bottom face of a pyramid or cone.
center The given point from which all points on a sphere are the same distance.
cone A three-dimensional figure with curved surfaces, a circular base and one vertex.
cubic units Used to measure volume and tells the number of cubes of a given size that will fill a three-dimensional figure.
cylinder A three-dimensional figure with all curved surfaces, two circular bases and no vertices.
edge The intersection of faces of a three-dimensional figure. (a line)
face The flat surface of a three-dimensional figure.
height The shortest distance from the base of a parallelogram to its opposite side.
lateral face A side of a three-dimensional figure that is not a base.
prism A three-dimensional figure that has two parallel and congruent bases in the shape of polygons and at least three lateral faces shaped like rectangles. The shape of the bases tells the name of this figure.
pyramid A solid figure that has a polygon for a base and triangles for sides. It is named for the shape of its base.
sphere A three-dimensional figure with no faces, bases, edges, or vertices. All of its points are the same distance from a given point called the center.
surface area The sum of the areas of all the surfaces (faces) of a three-dimensional figure.
three-dimensional figure A figure that encloses a part of space.
vertex (vertices) The point where three or more edges of a three-dimensional figure intersect.
volume The amount of space that a three-dimensional figure contains. It is expressed in cubic units.
plane A two-dimensional flat surface that extends in all directions.
solid A three-dimensional figure.
polyhedron A solid with flat surfaces that are polygons.
square units Used to measure area of a 2-dimensional figure or surface area of a 3-dimensional object.