Gracelyn's Crossword puzzle

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Across
  1. 1. A mythical Animal Having One Horn
  2. 4. form of transportation
  3. 6. One who counts or the number above the line in a fraction
  4. 8. Half of a circle
Down
  1. 2. figure of sign expressing a number
  2. 3. One form or shape
  3. 5. word that means counted.
  4. 7. half sphere