These pairs represent 3 vertices of a parallelogram: (0,1); (3,1); (1,3). What is the ordered pair of the 4th?

Question

These pairs represent 3 vertices of a parallelogram: (0,1); (3,1); (1,3). What is the ordered pair of the 4th?

Answer 1

(4,3)!!!

Answer 2

the 4th point will be at (4,3)

Answer 3

4,3

Answer 4

Let vertices be A  , B , C and D

a = j   <--------position vector of A

d = 3 i  <--------position vector of D

b = i <--------position vector of B

Vector AB = i + 2 j

Vector DC = i + 2 j

c = d + ( b - a )

c = (3 , 1) + (1, 2)

c = (4 , 3 )

C is point C (4,3)