Across
- 4. pairing with one mate
- 5. muscle with three divisions
- 6. any five-sided polygon
- 9. a sea animal that has a soft body and eight long arms
- 10. a period of 10 years
- 11. pertaining to two sides
- 12. a valve with three points
- 14. consisting of seven parts or elements
- 15. a polygon with six edges and six vertices
- 16. recurring every six years
Down
- 1. animal that walks on four feet
- 2. any set or group of five persons or things
- 3. teeth with 2 points
- 7. consisting of nine
- 8. a group or series of four
- 13. one, true, glandular stomach