) 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 perpendicular
D. Diagonals of PQRS are equal
Answer:C
) 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 perpendicular D. Diagonals of PQRS are equal
Explanation: The quadrilateral formed by joining the mid-points of the sides of a quadrilateral PQRS, taken in order, is a rectangle, if the diagonals of PQRS are perpendicular.