Sydney

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Across
  1. 3. - Something with 3 people
  2. 5. -Has a horn
  3. 8. -A group of people merging together
  4. 9. - A polygon or shape that has 4 angles
  5. 10. -a group of people doing something at the same time
  6. 11. -Has 8 legs
  7. 14. -10th month of the year
  8. 15. - Something divided into 2
  9. 17. - Something one and only
  10. 18. -A shape with 8 edges
  11. 21. - speaking 2 or more languages fluently
  12. 22. - A group of 3 related things
  13. 23. - Like a fortnight
Down
  1. 1. - 3 close friends
  2. 2. -A shape with 5 edges
  3. 4. -A group of people joining together
  4. 6. - Represents their school
  5. 7. -2 wheeled, powered by pedals
  6. 12. - 3 wheeled bike
  7. 13. -vast number of galaxies
  8. 16. - Holds your phone
  9. 19. - Like twins but with one more
  10. 20. - 3 edged 2D shape