Number Prefixes

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1234567891011
Across
  1. 4. A three-wheeled cycle.
  2. 5. The eight month of the year.
  3. 7. A group comprising of two singers.
  4. 8. An identifying outfit worn by members of a group, profession or organization.
  5. 9. A four-sided flat shape.
  6. 10. A period of 100 years.
Down
  1. 1. To make an exact copy like the original.
  2. 2. Two-footed animals.
  3. 3. An eight-sided flat shape.
  4. 4. A term or period of three months.
  5. 6. A group comprising of three singers.
  6. 11. An athletic event comprising of three consecutive events, usually swimming, bicycling and distance running.