Answer:
All have same magnitude.
Step-by-step explanation:
Given that
Vector 1 = V+ (-W) = V - W
So the magnitude of vector 1, R₁

R₁ = V -W
For vector 2
Vector 2 = W - V  = W - V
So the magnitude of vector 2, R₂

 R₂ = V -  W
For vector 3
Vector 3 = (-V) - (-W) = - V + W = W - V
So the magnitude of vector 3, 

R₃ = W -V 
So all have same magnitude.