Across
- 2. Happening every two years
- 5. Old type of plane with two pairs of wings
- 6. One colour
- 7. Being three times as big
- 9. A large plant eating dinosaur with three horns
- 10. Creature similar to a horse having one long horn
- 12. Highest level of education
Down
- 1. Cut into two pieces
- 2. Instrument with lenses for two eyes
- 3. A stool or stand with three legs
- 4. The world and all mankind
- 8. Happening twice per year
- 11. Combine into one