# Pi

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Pi is a mathematical concept related to circles, geometry, and probably more.

- Subpages

**Notice:** Pi/Real cosine function/Definition and Pi/Zero of cosine/Introduction/Section are two subpages to Pi that should not be deleted because they are transclusions to another learning resource. **Please do not delete this page because it might help "protect" the subpages.**

## Learning resources[edit | edit source]

### Wikipedia[edit | edit source]

- Pi
- Pi (Category)
- Irrational number
- Approximations of π
- List of topics related to π
- List of formulae involving π
- A History of Pi
- Turn_(angle)#Tau_proposals
- Six nines in pi
- Proof that π is irrational

### External[edit | edit source]

- A Brief History of Pi (π)
- Pi is magic
- The History of Pi
- pi to 10,000 digits
- Baylor Math Chair Explains Magic, Mystery of π (Pi)
- Are there any practical applications of pi, aside from calculating the area or circumference of a circle?
- Pi and the Circumference of a Circle
- Our endless fascination with pi

## Discussion questions[edit | edit source]

- What are useful applications of pi in engineering or science?
- How is pi useful in computer science?