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All equilateral triangles are similar to one another. True or false (choose the correct option).

Class 10Criteria for SimilarityGeometry — Similarity
  • ATrue, by AA criterion
  • BFalse
  • CTrue, only if same size
  • DCannot be decided

Step-by-Step Solution

Every equilateral triangle has all angles 60°, so any two share two equal angles — similar by AA.
Answer: A) True, by AA criterion

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