Glossary

Check Item Terms

1  Geometric element Defines an object's shape and its position.
 Examples: Lines, curves, planes, surfaces of revolution, surfaces
2  Topological element Defines the point or line at which each element is joined.
 Examples: Solids, faces, edges, vertices
3  Curve A geometric element indicating an object's curve shape; an infinite curve.
As used for check items, the definition also includes edges.
4  Edge Topological elements demarcated by two vertices indicating start and end points.
5  Edge loop An outline of a surface comprising multiple closed edges.
6  Segment An element comprising an edge.
A single curve comprises multiple segments.
7  Face A topological element with a base surface trimmed by edges.
8  Base surface The original surface to be trimmed.
9  Surface Same as base surface.
As used for check items, the definition also includes faces.
10  Surface patch A lattice element comprising a base surface.
A single base surface comprises multiple patches.