# Using Triangles to Understand Circles

Unit 10: Circles
Lesson 6 of 10

## Big Idea: We all know that pi relates to circles--but where does this number come from? Students use and understand Archimedes' method for approximating pi, and in doing so learn an important application of limits.

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Standards:
Subject(s):
Math, Precalculus and Calculus, Geometry, pi, circles, Archimedes Method for Approximation, limit, equation
75 minutes

### Hilary Yamtich

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