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The Angle Defect of a Polyhedron (Geometry and the Imagination)

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Visit this site: http://geom.math.uiuc.edu/docs/education/institute91/handouts/node18.html

Author:Conway, Doyle, Gilman, Thurston; The Geometry Center
Description: The angle defect at a vertex of a polygon is defined to be 2 pi minus the sum of the angles at the corners of the faces at that vertex. What is the angle sum for a polygon (in the plane) with n sides? Determine the total angle defect for each of the 5 regular polyhedra.

Levels: Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Lesson Plans and Activities
Math Topics: Polyhedra, Triangles and Other Polygons

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