hex, hept(a) oct(a), ennea, dec Greek Root Review

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Across
  1. 3. happening every eighth year
  2. 4. a nine-sided shape
  3. 6. a flat, closed figure with six straight sides
  4. 9. happening every ten years; a tenth anniversary
Down
  1. 1. a unit of time equal to ten years
  2. 2. a group or series of seven
  3. 4. a group or set of nine
  4. 5. a group of eight singers or musicians
  5. 7. possessing six legs or feet; any insect
  6. 8. a government or state controlled by seven persons