This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)


Ray[{x1, y1}, {x2, y2}]
is an object representing the infinite ray beginning at {x1, y1}in the direction of the point {x2, y2}.
  • Ray objects are used in the representation of open polygons in Voronoi diagrams.