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How many pairs of equal parts (sides/angles) are needed in any standard congruence criterion?

Class 9Criteria for CongruenceGeometry — Triangles
  • A2
  • B6
  • C4
  • D3

Step-by-Step Solution

SSS, SAS, ASA, AAS and RHS each use exactly three pairs of equal corresponding parts.
Answer: D) 3

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