Geometry

Question Analysis:
This question involves identifying a shape based on diagonal characteristics.
The main focus is on the combined diagonal properties.

Key Concept Explanation:
Only squares have diagonals that are both congruent and perpendicular.

Step-by-Step Solution:
Rectangle: diagonals are congruent but not perpendicular
Rhombus: diagonals are perpendicular but not congruent
Square: diagonals are both
Parallelogram: neither necessarily congruent nor perpendicular

Option Analysis:
A) Incorrect – only one diagonal cond...