Sketching Infinite Lines You cannot convert an infinite length line to a finite length line. However you can convert a finite length line to infinite length. To create lines of infinite length: Click Line (Sketch toolbar) or click Tools > Sketch Entities > Line. In the Insert Line PropertyManager:Under Orientation, select an orientation. Under Options, select Infinite length. Click to sketch one or more lines. In the Line Properties PropertyManager, do any of the following:Under Options, select For construction. Under Parameters, set a value for Angle (if you selected As sketched or Angle as Orientation). Click to return to the Insert Line PropertyManager where you can change settings or exit the sketch. Parent topicSketch Entities Insert Line PropertyManager - 2D Line Properties PropertyManager - 2D