-Uni, -Bi, and -Tri Crossword

1234567
Across
  1. 2. A mythological creature with one horn
  2. 4. three wheeled bike
  3. 5. twice a year
  4. 6. a number with nine zeros after it
  5. 7. dinosaur with three horns
Down
  1. 1. one wheeled moving thing
  2. 3. speaks two languages
  3. 6. vehicle with two wheels