English Acc Tri- and Quad-

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Across
  1. 2. to cut into three parts
  2. 3. a muscle group consisting of four muscles
  3. 5. to cut into four equal parts
  4. 6. the ability to speak four languages
  5. 8. an animal with four legs
  6. 9. involving three sides
  7. 10. one of four equal part of a circle
  8. 12. happening ever four years
  9. 13. a race that has three activities
Down
  1. 1. a three legged stool
  2. 2. a three sided figure
  3. 3. a plane figure in geometry that has four sides
  4. 4. four side enclosed building
  5. 6. a collection of four
  6. 7. four times as much
  7. 11. three related novels
  8. 14. a three wheeled bike