Mis/Pre/Uni/Bi/Tri

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Across
  1. 3. horse with one horn
  2. 4. listened poorly
  3. 6. speaks two languages
  4. 7. Olympic event with 3 sports
  5. 8. show what you know before a unit
  6. 10. tool to see far away
  7. 11. to see before
  8. 12. warm up oven before cooking
Down
  1. 1. shape with 3 corners
  2. 2. dinosaur with 3 horns
  3. 3. the only one, special
  4. 4. an error
  5. 5. to behave poorly
  6. 9. a bike with 3 wheels
  7. 10. part of arm with 2 muscles