Quadrilaterals do not bisect each other. They could in special cases.
In parallelograms (types of quadrilaterals), the diagonals bisect each other.
Quadrilaterals that have diagonals that bisect each other at 90 degrees are a square, a rhombus and a kite
squares
Parallelograms.
squares
Square, rhombus and a kite have diagonals that bisect each other at 90 degrees
Arrow head
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.