hemi/semi practice

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Across
  1. 2. half of a sphere
  2. 5. a bike with 3 wheels
  3. 6. a bike with 2 wheels
  4. 7. a pair of glasses wit h2 parts of focal points
  5. 8. all matter and space
  6. 10. a game or round before the final
  7. 13. half of a circle
Down
  1. 1. a mythical animal with a horn
  2. 2. half of a cycle
  3. 3. an instrument with a lens for both eyes
  4. 4. an aircraft with 2 pairs of wings
  5. 6. every 2 weeks
  6. 9. clothing worn by all members of a team
  7. 11. a shape with 3 sides
  8. 12. half of a year