Mark off the length of the radius around the circle. Using a compass, the presenter shows how to construct a regular hexagon in a circle. Pupils see how triangles formed in the hexagon are equilateral, allowing for the construction to happen.

Concepts

geometric constructions, hexagons, circles, equilateral triangles, radius

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Additional Tags

math

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Instructional Ideas

• Review the measures of interior angles of a hexagon and how to determine the triangles are equilateral

Classroom Considerations

• Individuals need to have a compass and straightedge
• Class members should know how to measure a distance using a compass

Pros

• Provides an explanation of what to look for if the construction is not the same
• Includes opportunities to practice

Cons

• None

Common Core

SL.9-10.2 SL.11-12.2 HSG-CO.D.13 MP5 MP6