"Prove that the points (2,-1), (0,2), (2,3) and (4,0) are the   coordinates other vertices of a
Channel: Doubtnut
Date: 2020-07-05

"Prove that the points (2,-1), (0,2), (2,3) and (4,0) are the
 
  coordinates other vertices of a parallelogram and find the angle between its
 
  diagonals."