The special quadrilaterals that have congruent diagonals are:
- Square
- Rectangle
So the correct responses from your list would be Square and Rectangle.
Rhombuses also have diagonals that bisect each other at right angles but are not necessarily congruent. Parallelograms do not have congruent diagonals unless they are rectangles or squares.
Therefore, only the Square and Rectangle have congruent diagonals among the options listed.
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