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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
• 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 entity.
• Parallel draws the ray parallel to an existing entity.
To draw a ray
1 Do one of the following to choose Ray:
• On the ribbon, choose Home > Ray or choose Draw > Ray.
• On the menu, choose Draw > Ray.
• On the Draw toolbar, click the Ray tool.
• Type ray and then press Enter.
2 Specify the start point.
3 Specify the direction.
4 To complete the command, press Enter.
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