#linear_perspective__perspective  the appearance of things relative to one another as determined by their distance from the viewer
  supertype:  #visual_aspect__appearance  outward or visible aspect of a person or thing
  part:  #vanishing_point.visual_aspect__vanishingpoint  the appearance of a point on the horizon at which parallel lines converge
  part:  #apparent_horizon__horizon__visible_horizon__visiblehorizon__sensible_horizon__skyline  the line at which the sky and Earth appear to meet
  part:  #picture_plane__pictureplane  the plane that is in the foreground of a drawing or painting; coextensive with but different from the objective surface of the work

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