Extend by Distance
Extends or shortens a line by moving one of the points defining the end of the line a specified linear distance, to a relative X coordinate,to a relative Y coordinate, or to a relative Z coordinate. The line maintains the same angle after it has been extended.
Point 1: Endpoint
Enter the distance to be added to the line.
Specify whether the extension for the line is to be measured along the line or with respect to the X-Axis, the Y-Axis, or the Z-Axis Now, set a point on the endpoint to be extended.