Across
- 5. Book published in 1220 (8, 10)
- 6. Fibonacci's first name
- 8. The number system introduced by Fibonacci (5, 6)
- 9. Name of Ratio linked to Fibonacci sequence
Down
- 1. First name of Emperor who recognised Fibonacci's services to Pisa
- 2. Fibonacci's first publication (5, 5)
- 3. Shape found in nature which can be generated by the Fibonacci sequence
- 4. Area where Fibonacci learnt about different number systems (13, 5)
- 7. City of birth