Types of Geometric Objects
GeoGebra works with many types of geometric objects
Lists of points, loci, and some of the above mentioned objects (lines, conic sections, arcs, polygons, functions, single variable inequalities, intervals) are referred to as paths. One can define a point to belong to a path using the Point Command. Each point on a path has a path parameter, which is a number ranging from 0 to 1. To get this parameter, you can use the PathParameter Command.