The quadrilateral formed by joining the mid points of the sides of a quadrilateral PQRS taken in order is a rectangle. If
(A) PQRS is a rectangle
(B) PQRS is a parallelogram
(C) Diagonals of PQRS are perpendiculars
(D) Diagonals of PQRS are equal
Answer: [C]
Solution.
According to question quadrilateral, ABCD is formed by joining the midpoints of PQRS
If PQRS is a rectangle
Here ABCD is not a rectangle because a rectangle is a four-sided polygon having all the internal angles and the opposite sides are equal in length.
If PQRS is a parallelogram
Here ABCD is not a rectangle because a rectangle is a four-sided polygon having all the internal angles and the opposite sides are equal in length.
If diagonals of PQRS are perpendicular
Here ABCD is a rectangle because here
and opposite sides we equal that is AB = DC and AD = BD
If diagonals of PQRS are equal
ABCD is not a rectangle it is a square
Because here AB = BC = CD = AD and
Here we saw that if diagonals of PQRS are perpendicular to each other then ABCD is a rectangle
option C is correct
(C) diagonals of PQRS are perpendicular