By which rule are these triangles congruent?
A)AAS
B)ASA
C)SAS
D)SSS

In ΔPQN and ΔSQN,
PN = SN (Given)
PQ = SQ (Given)
QN = QN (Common)
∴ ΔPQN ≅ ΔSQN (By SSS Criteria)
Option D is the correct answer.
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