# Geometric Objects

## Paths

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.

Lists of other paths are also paths. |

## Regions

You can also restrict points to a *region* (polygon, conic, arc, two variable inequality) using the
PointIn Command or Point on Object Tool.

See also Attach / Detach Point Tool. |