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