Uni-, Bi-, Di-, and Tri- Words

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Across
  1. 4. a shape with three sides
  2. 5. three children born at the same time
  3. 8. something that has three colors
  4. 9. a vehicle with one wheel
  5. 12. taking place every two years
  6. 13. a species that walks on two legs
Down
  1. 1. having two colors
  2. 2. a mythical creature with one horn
  3. 3. something that moves in one direction
  4. 6. a group of three novels, like The Hunger Games
  5. 7. someone who speaks two languages
  6. 10. having two branches or chambers
  7. 11. to divide something in two parts