Stretch entities by selecting base points and dragging or by using X and Y destination coordinates.
To open the Stretch PropertyManager:
In Edit Sketch mode click Stretch Entities 
(Sketch toolbar) or .
Entities To Stretch
 |
Sketch items or annotations |
|
Parameters
| From/To |
Sets a Base point  for stretching. |
| X/Y |
Sets destination coordinates for stretching. |
| Repeat |
Stretches the entities again by the same distance. |