Greek and Latin Number Prefixes

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Across
  1. 2. having two parts
  2. 4. happening every two years
  3. 5. to cut into two equal parts
  4. 6. happening every two weeks
  5. 8. a speech performed by one person
  6. 9. an athletic contest with three events
  7. 10. a stand with three legs
  8. 13. happening every three years
  9. 14. a group of three literary or musical works
Down
  1. 1. every three hundred years
  2. 3. having three colors
  3. 7. a railroad whose cars run on a single rail
  4. 8. one voice
  5. 11. tiresome and only happening the same way
  6. 12. happening every two months
  7. 13. three children born at the same time