Number Prefixes

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Across
  1. 5. do something as one
  2. 7. one-wheeled vehicle
  3. 8. three times
  4. 9. every two weeks or every other week
  5. 10. group of three
  6. 11. item which uses two lenses to see closer
  7. 14. shape with three sides
  8. 15. siblings of three born on the same day
  9. 16. a bug with many legs
  10. 17. two-wheeled vehicle
Down
  1. 1. 100 years
  2. 2. higher education
  3. 3. bring together
  4. 4. clothing worn by people of the same organization or school
  5. 6. a small unit of measurement
  6. 7. mythical creature
  7. 9. divide into two parts
  8. 12. existing matter and space considered as one whole
  9. 13. three-legged stand
  10. 15. three-wheeled vehicle