Diagonals are not perpendicular in
Kite
Rectangle
Rhombus
Square
In a rectangle, diagonals are equal in length and they bisect each other but diagonals are not perpendicular so rectangle is the correct option.
The two diagonals are not necessarily equal in a
(a) rectangle (b) square
(c) rhombus (d) isoceles trapezium
The diagonals do not necessarily bisect the interior angles at the vertices in a
(c) rhombus (d) all of these