"`A B C D` is a   rectangle formed by joining the points `A(-1,\ -1),\ \ B(-1,\ 4),\ \ C(5,\ 4)`
Channel: Doubtnut
Date: 28/06/2020

"`A B C D`
 is a
 
  rectangle formed by joining the points `A(-1,\ -1),\ \ B(-1,\ 4),\ \ C(5,\ 4)`
 and `D(5,\ -1)dot`
 `P ,\ Q ,\ R`
 and `S`
 are the
 
  mid-points of sides `A B ,\ B C ,\ C D`
 and `D A`
 respectively.
 
  Is the quadrilateral `P Q R S`
 a square? a
 
  rectangle? or a rhombus? Justify your answer."