maths crossword

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Across
  1. 2. a trianlge with 2 equal sides
  2. 5. last term
  3. 6. first term of AP
  4. 8. a figure with 3 sides and 3 angles
Down
  1. 1. theorem also known as BPT theorem
  2. 3. one of the similarity criteria
  3. 4. triangle a triangle having 3 equal sides
  4. 7. 2 sides and an angle between them