


Related Terms 


Halfplane: The portion of a plane on one side of a line extending on the plane. 
Plane: One of the basic undefined terms of geometry. A plane goes on forever in all directions (in twodimensions) and is "flat" (i.e., it has no thickness).
Axis: A reference line used in a graph or coordinate system.
Quadrant: One of the four regions on a Coordinate plane formed by the intersection of the xaxis and the yaxis.
xaxis: The horizontal number line on the Cartesian coordinate plane.
yaxis: The vertical number line on the Cartesian coordinate plane.


