“Pi Worksheets” are educational materials used to help students understand and learn about the mathematical concept of “pi.” Pi (often represented by the Greek letter π) is a special number that describes the relationship between the diameter and the circumference of a circle. Essentially, if you were to measure the distance around a circle (circumference) and then measure across its widest part (diameter), the ratio would always be approximately 3.14159, which is known as pi.

Term | Definition |
---|---|

Pi (π) | The ratio of the circumference of a circle to its diameter. It’s approximately equal to 3.14159. |

Diameter | The distance across a circle through its center. |

Circumference | The distance around the outside of a circle. |

Worksheets | Educational materials or sheets for learning purposes. |

**List of Facts about Pi:**

- Pi is an irrational number, meaning it has infinite decimal places without any repeating pattern.
- Every year, “Pi Day” is celebrated on March 14th, reflecting pi’s approximate value of 3.14.
- Despite its complexity, pi is used in many areas of mathematics and science.

Important Note:While we often round pi to 3.14 for simplicity, it has been calculated to over a trillion decimal places by mathematicians and computer scientists!

**Answer Key**