Geometry On the Sphere (Geometry and the Imagination)
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|Conway, Doyle, Gilman, Thurston; The Geometry Center|
|Great circles on the sphere are the analogs of straight lines in the plane. Such curves are often called geodesics. A spherical triangle is a region of the sphere bounded by three arcs of geodesics... Geometry on the surface of the sphere will come in handy later on for Descartes' angle-defect formula.|
|Levels:||Elementary, Middle School (6-8), High School (9-12)|
|Resource Types:||Lesson Plans and Activities|
|Math Topics:||Elliptic & Spherical Geometry|
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