
How to construct a line parallel to a given line at a given distance?

1. 
 Start with the given line and determine the given distance.


2. 
 Mark two arbitrary points on the given line.


3. 
 Construct a circle, which has the given distance as its radius.


4. 
 Copy circle 3 two times, to points 2 (points 2 become the centers of these circles).


5. 
 Construct two lines perpendicular to the given line from each point 2 upwards. These lines must intersect circles 4.


6. 
 Draw the connecting line between the intersections of lines 5 and circles 4.


7. 
 Line 6 is the line to be constructed, it is parallel to the given line at the given distance.

