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The table lists four pairs of triangles. Which pair is congruent by SAS?

Class 9SAS, ASA and AAS CongruenceGeometry — Triangles
  • APair 2
  • BPair 1
  • CPair 4
  • DPair 3

Step-by-Step Solution

Pair 2: AB = PQ, BC = QR and the included angles ∠B = ∠Q. Pair 1 has the angle at A (not between AB and BC) — SSA. Pair 3 is AAA. Pair 4 has unequal included angles.
Answer: A) Pair 2

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