Pi Is a Ratio

Describe π as the ratio of the circumference of a circle to its diameter.

Part of The student applies mathematical process standards to use geometry to describe or solve problems involving proportional relationships

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Intro

What Is Pi?

By the end of this lesson you will describe pi as the ratio of a circle's circumference to its diameter, and explain why that ratio is the same for every circle, no matter how big or small it is.

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