A ray is a line in three dimensional space that starts at a point and extends to infinity. Because rays extend to infinity, they are not calculated as part of the drawing extents. The default method for drawing a ray is to select the start point of the ray and then specify its direction.

You can draw a ray in any of the following ways:

  •      Horizontal draws the ray parallel to the x-axis of the current user coordinate system (UCS).

  •       Vertical draws the ray parallel to the y axis of the current UCS.

  •      Angle draws the ray parallel to a specified angle.

  •      Bisect draws the ray perpendicular to an existing object.

  •       Parallel draws the ray parallel to an existing object.

To draw a ray

  1.   Choose Draw > Ray.

  2.   Specify the start point.

  3.   Specify the direction.

  4.   To complete the command, press Enter.

Command line RAY


Start point (A) and direction (B).

Commands Reference

LINE: Creates straight line segments

RAY: Creates a semi-infinite line

XLINE: Creates an infinite line

System Variables Reference



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