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Is it true that all isosceles triangles are similar?

Class 10Criteria for SimilarityGeometry — Similarity
  • ANo, the vertex angles may differ
  • BYes, by SSS
  • CYes, by AA
  • DYes, by SAS

Step-by-Step Solution

Isosceles triangles only guarantee two equal sides; their angles can differ, so they need not be similar.
Answer: A) No, the vertex angles may differ

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