## Example sort: Lines of Symmetry - Section 3: The Four Triangle Problem

Example sort: Lines of Symmetry

# Four Triangles

Unit 1: Creating Classroom Culture to Develop the Math Practices
Lesson 2 of 6

## Big Idea: Students will engage in a hands-on activity through which they will be introduced to the notion of proof by exhaustion as well as one of the big ideas of geometry: classifying and differentiating.

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Standards:
92 minutes

### Jessica Uy

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