Across
- 3. pattern or sequence of numbers in triangle named after him
- 4. had a method to find the sum of the first 100 intergers
- 6. first used the X symbol for multiplication
- 7. discovered sequence of numbers while studying rabbits
- 8. created systematic procedure for isolating prime numbers
- 10. "Father of Logic"
Down
- 1. wrote "How to Solve It" Understand, Plan, Solve, and Look Back
- 2. developed basic idea of set theory
- 5. triangle illustrates the concept of fractals
- 9. wrote "La Thiende" (The Tenth) giving rules for computing with decimals