Geometry

Question Analysis:
This question tests understanding of the SAS congruence postulate.
It focuses on whether the given side - angle - side info fits the SAS structure.

Key Concept Explanation:
SAS requires the angle to be the included angle between the two given sides.

Step - by - Step Solution:
We have PQ = ST, QR = TU, and ∠R = ∠U.
But ∠R isn't between PQ and QR, and ∠U isn't between ST and TU.
So, the triangles don't meet SAS criteria.

Common Mistakes:
Misinterpreting SAS as allowing any two - side - one - angle combination.
Overlooking the need for the angle to be ...