Properties of quadrilaterals:
Rectangle: Image 2
Internal agles are right angles (90º)
Diagonals bisects each other but not perpendicularly (Doesn't form angles of 90º)
The diagonals of a rectangle are equal. Then, if they bisects each other the four lines are equals.
Parallelogram: Image 1
Diagonals bisects each other but not perpendicularly (Doesn't form angles of 90º).
Square: Image 3
Internal agles are right angles (90º)
Diagonals bisects eact other perpendicularly (form 90º angles).
All the sides have the same measure.
Rhombus: Image 4
Diagonals bisects eact other perpendicularly (form 90º angles)
All the sides have the same measure.