Across
- 2. The first large and official celebration of the day took place at the San Francisco ________in 1988.
- 5. At the inaugural event, people marched around a circular space and ate _____ ____.(2 words)
- 6. The symbol "π" was first used in 1706 by William _______.
- 9. Pi Day celebrates the pi symbol (π) and its importance to _________.
Down
- 1. Pi is used in mathematics to represent the ratio of the _________ of a circle to its diameter.
- 3. It was organized by Larry Shaw, a _______at the Exploratorium.
- 4. The first digits of this ratio are 3.14159, and the number continues _________ without pattern.
- 7. It gained in popularity after being used by _____ mathematician Leonhard Euler in 1737.
- 8. The symbol is a ______ letter.