Quadrilaterals that have diagonals that bisect each other at 90 degrees are a square, a rhombus and a kite
Square, rhombus and a kite have diagonals that bisect each other at 90 degrees
There is no quadrilateral on that list with diagonals that bisect each other.
A parallelogram a rectangle a square and a rhombus
2 diagonals bisect each other only in the case of square , parallelogram, rhombus , rectangle and isosceles trapezium ;not in ordinary quadrilaterals.
Rectangle Rhombus Parallelogram Square
Rhombus, Square, Rectangle AND Parallelogram (APEX) o. O
They are either kites or (if the diagonals bisect each other) rhombuses.