Leonhard

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Across
  1. 3. What degree did he get
  2. 4. The day he was born in
  3. 5. He was interested in the _______ theory
  4. 7. What he made that is now in modern math
  5. 8. Month he was born in
Down
  1. 1. Century he was born in
  2. 2. A theory he made which is call the _____ theory
  3. 3. Know was one of the greatest _________
  4. 6. Country He was born In
  5. 9. Something he popularized