Spelling Unit 3 crossword puzzle

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Across
  1. 1. a shape with three corners and sides
  2. 3. something occurring twice during a month
  3. 4. a combination of people's voices singing together
  4. 5. another word for college
  5. 7. something that occurs only twice a year
  6. 8. *extremely big
  7. 10. half a circle
  8. 11. a camera holder
  9. 14. a punctuation mark indicating a pause
  10. 15. where the solar system is and galaxies rome everywhere
  11. 17. a group of three
  12. 18. a transportation device with only two wheels
  13. 19. *boom!
  14. 20. 3 times
  15. 21. different than the others
Down
  1. 1. *a branch of mathematics
  2. 2. something used to see far away
  3. 6. the competition before the finals
  4. 9. *a person who is fluent in two languages
  5. 11. three people usually from the same family that look and sometimes act alike
  6. 12. together as one
  7. 13. *to notice or identify something
  8. 16. strong muscles located in the upper arm
  9. 18. bigger than the number million
  10. 21. make or become one