Carson's Crossword puzzle

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Across
  1. 4. one form or shape
  2. 6. half-circle
  3. 8. type of freight trailer
  4. 9. Many in number
  5. 10. a figure or sign expressing a number
  6. 11. one who counts,or a number above the line in a fraction
Down
  1. 1. a half circle
  2. 2. a half-sphere, as in globe
  3. 3. a bike with one wheel
  4. 5. a mythical animal having one horn
  5. 7. counted