The Number Pad
Use the number pad to type in exact measurements for your work.
Draw an object on canvas or select from an existing one
Tap on any displayed dimension or angle
Enter a precise measurement and tap the green Checkmark to accept your entry
Change the Direction in which the edit will apply
You can view and change the direction for which the entry will apply. A small orange arrow head appears next to the displayed length. It point in the direction of the side of the line that will lengthen or shorten.
To change the direction, tap on the orange “Change Direction” icon in the dialog.