Translations:Glossary/18/en

From FreeCAD Documentation
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Edge
1.  A segment joining two vertices. This segment can be a straight line or a curve. The CAD kernel defines it as: One-dimensional shape corresponding to a curve and bounded by a vertex at each extremity. A closed circle has therefore only one vertex, where it starts and ends. See "Open CASCADE Technology, Profile: Defining the Topology".
2.  The joining line between two faces. It can be curved or straight.
Element
An item of Sketcher geometry such as a point, a line segment, an arc, a circle, etc.
Expression
1.  A general term used in mathematics and programming.
2.  In FreeCAD expressions are used to compute values. They can reference and drive object properties. They are used in spreadsheets and to control parametric models.
Extrude
A general term for extending a 2D object into 3D along 1 direction. See also Pad.