Geometry

Question Analysis:
This question involves right triangles and asks which theorem can prove their congruence.

Key Concept Explanation:
The HL Theorem applies to right triangles where the hypotenuse and one leg are congruent.

Step-by-Step Solution:
△ABC and △DEF are right triangles (given).
AC ≅ DF (hypotenuse) and BC ≅ EF (leg).
The HL theorem states that if the hypotenuse and one leg are congruent in two right triangles, they are congruent.

Option Analysis:
A) SSS 🚫 Needs three sides, but we have only two.
B) SAS 🚫 Needs an included angle, not met here.
C) ASA 🚫 Requires two angles a...