ANGLE allows you to create a line entity at a given angle
from an existing line.

Enter an angular value (in degrees) and press <Enter>. The
rotation angle that you specify is relative to the
construction-view z axis. A positive angle indicates a
counter-clockwise rotation about the construction-view z
axis, when that axis is pointing toward you.

Select a reference line near the desired endpoint.

Using the Position Menu, select a position where you want 
to put the angled line.

With the line limits switch set to FUNCTN, the new line is
the same length as the reference line. With the line 
limits switch set to VIEWPORT, the new line extends to the
limits of the screen display.

In 2-D construction mode, the reference line is projected
to the current construction plane, and the new line is 
created in the current construction plane.

In 3-D construction mode, the system locates a plane that 
is parallel to the current construction plane and creates
the new line in this plane.

