Pi Puzzle

3. Half the diameter.
4. The man first believed to have accurately calculated pi.
10. Archimedes calculated pi around __ BC. (number is in word form, no dashes)
11. A fraction that will give you a result close to pi is twenty-two dived by (word).
12. The day we celebrate Pi Day (month in word form, day in number form).
18. Pi is a ___ letter.
19. The letter “p” and, thus, pi was taken from the word meaning __.
20. Pi can be written as a type of number called a __ number.

1. The longest chord; passes through a circle’s center.
2. With pi, the __ of a circle does not matter. No matter its __, pi will be the same!
5. Pi is an ___ number… it goes on forever.
6. Pi is a mathematics __ used by mathematicians all over the world!
7. With the help of __, we now know more digits of pi than ever before!
8. A specific type of math in which we use pi.
9. What you will find when using the formula 2πr; a circle’s perimeter.
13. A line segment connecting two points on a circle’s circumference.
14. Pi has been used in mathematics since the Mid-___ th century. (a number)
15. In pi, patterns will not __.
16. The ratio of a circle’s circumference to its diameter.
17. What you will find when using the formula πr2