Question

The co-ordinates of three consecutive vertices of a parallelogram are (1,3), (-1,2) and (2,5). Then what is the co-ordinate of the fourth vertex?

Answer 1

`(5,4)`

Explanation:

Calling

`A = (1,3)`
`B =(-1,2)`
`C=(2,5)` we have

`D = (A-B)+(C-B) = (5,4)`