Line Parallel to Horizontal and Vertical Plane

• When the line is parallel to both HP and VP, its front view and top view are parallel x-y and show true length. 
• Let us consider a line AB of length l, parallel to HP and VP as shown in Figure. 
• Let the distance of line from HP and VP is h and w respectively.
• As the line is situated in first quadrant, its front view will be above x-y and top view below it. 
• Line is parallel to both HP and VP, therefore both front view and top view will parallel to x-y with the length l (TL).

Example
A line AB of length 50 mm is parallel to both HP and VP. The line is 15 mm above HP and 20 mm in front of VP. Draw its projections.