Geometry

Question Analysis:
This statement tests your ability to distinguish between necessary and sufficient conditions.
The main focus is avoiding overgeneralization from diagonal length.

Key Concept Explanation:
While congruent diagonals occur in some parallelograms (like rectangles), this is not true for all.
Also, non-parallelograms, such as isosceles trapezoids, can also have congruent diagonals.

Step-by-Step Solution:
Congruent diagonals alone don’t guarantee a parallelogram.
No info is given about bisection or opposite sides.

Common Mi...