Across
- 3. occurring every two years
- 6. a group of three books by the same author in order or in sequence
- 7. the branch of mathematics concerned with specific functions of angles and their application to calculations
- 8. lack of variation
- 10. a single rail track used for passenger to travel
Down
- 1. having two legislative branches or chambers
- 2. involving two things
- 4. speech with little to no change in tone
- 5. occurring once every three hundred years
- 9. occurring every three years or lasting three years