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Is 'AAA' (all three angles equal) a valid criterion for congruence of triangles?

Class 9Criteria for CongruenceGeometry — Triangles
  • ANo, it only proves similarity
  • BYes, always
  • CYes, only for right triangles
  • DYes, only for equilateral triangles

Step-by-Step Solution

Equal angles give the same shape but not the same size, so AAA proves similarity, not congruence.
Answer: A) No, it only proves similarity

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