Agrondvlak
Agrondvlak is a term used in Dutch-language geometry and related fields to denote the base or ground plane of a three-dimensional object or scene. It provides a reference surface for height measurements, projections, and construction, and is typically treated as flat and infinite unless specified otherwise.
In analytic geometry, a plane is defined by a point P0 on the plane and a normal
The plane can be finite when it forms the base of a solid, for example the base
In computer graphics, CAD and architecture, the aggrondvlak serves as the default reference plane for placing