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Across
  1. 2. A shape with 3 or more sides
  2. 4. Triangle with no equal sides or angles
  3. 6. Triangle, equal in all sides and angles
  4. 7. A group of living things with similar features
  5. 9. Having the same shape and size
  6. 10. A similar group of living things that can interbreed
Down
  1. 1. Triangle with 2 equal sides and angles
  2. 3. A comparison of two quantities with the same unit
  3. 5. A small part of something, smaller than a whole number
  4. 8. Animal without a backbone