Polygons — it's all about the angles. Groups work with dynamic geometry software to find the sum of the measures of the angles of various polygons. After finding the information for several polygons, the groups generate a formula that will work to find the measures for any polygon. Pairs measure exterior angles to investigate tessellations of regular polygons.

Concepts

polygons, regular polygons, interior angles, exterior angles, angles, irregular polygons, convex, tessellations

Show More Show Less

Additional Tags

math

Show More Show Less

Instructional Ideas

• Have each group create a poster to share their findings with the class
• Let each group create a tesselation that will cover a piece of paper

Classroom Considerations

• Groups will need access to a resource to find the names of the different polygons

Pros

• Includes differentiation suggestions
• The first activity is written specifically for software, but you can easily alter it to complete it with constructions

Cons

• None