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The Sum of the Interior Angles of a Polygon

Junior geometers discover that polygons can be decomposed into triangles and that the number of triangles can be determined by a rule. Note that the Geometer’s Sketchpad® software is required to carry out all components of this lesson. 

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CCSS: Adaptable
Resource Details

Grade
4th - 5th
Subjects
Math
2 more...
Resource Type
Lesson Plans
Duration
2 hrs
Instructional Strategies
Research
1 more...
Common Core

Included Materials

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