Geometry

Question Analysis:
Tests understanding of ASA correspondence in congruent triangles.

Key Concept Explanation:
ASA requires: Two angles and their included side to match in both triangles.
Given ΔPQR ≅ ΔSTU, their corresponding parts follow the order in ASA.

Step-by-Step Solution:
Given ASA congruence:
∠P = ∠S (first angle).
PQ = ST (included side).
∠Q = ∠T (second angle).
Substitute given values:
∠S = 40° (matches ∠P).
ST = 7 cm (matches PQ).
∠T = 55° (matches ∠Q).

Option Analysis:
(A) Correct: Matches all corresponding parts.
(B) Incorrect: Side SU is not included.
(C) Incorrect: TU ...