quads

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Across
  1. 6. plane figure in geometry of four sides
  2. 9. well versed in speaking four languages
  3. 10. four sided enclosure
Down
  1. 1. cut or divide into four equal parts
  2. 2. muscle group consisting of four muscles located front of thigh
  3. 3. collection or group of four babies born of same mother at same time
  4. 4. create four times as much of something
  5. 5. four footed animal
  6. 7. one out of four equal parts of circle
  7. 8. happens every four years