how to introduce a scale factor for more sketches with same geometry

[marcoevolution]

Hello I am in the situation of having to design a wing summarily: I imported the profile in catia but considering that what I imported is a set of points and lines not bound between lor, how can I make the profile b in figure is half the profile to without losing shape? ?Unfortunately being at the first weapons and not having a full mastery of the software (what I do is what I learn by studying me the tutorials on youtube) I would ask you to describe the solution you propose through sequential steps
thanks many:finger:

 

[alpole]

Hello.
I think it can solve your case.
I show you, in the attached file, a possibility of reduction ( scaling) using
as a cental point ( pivot) the centre of the figure-
logically, varying the applization point and scale parameters can get
completely different results.. .
another solution, always illustrated in the file is the use of the parallel curve command, but in this case
as you will see, if you change the data related to the offset of the input curve, the output type is changed.......
I hope that this will make you clear the concept-
greetings
to the