Definition:Base of Geometric Figure

Definition
The base of a geometric figure is a specific part of that figure which is distinguished from the remainder of that figure and placed (actually or figuratively) at the bottom of a depiction or visualisation.

In some cases the base is truly qualitiatively different from the rest of the figure.

In other cases the base is selected arbitrarily as one of several parts of the figure which may equally well be so chosen.

Base of Segment of Circle

 * SegmentOfCircle.png

Also see

 * Definition:Apex