Question

pls give immediate answer​

Answer 1

See there's a simple formula to calculate any one vertices of Parallelogram

That is,

→  x =  $x_{1}$ - $x_{2}$ + $x_{3}$

Similarly,

→ y = $y_{1}$ - $y_{2}$ + $y_{3}$

hope it helps, if you have a doubt ask.

Cheers!!