Triangles in Elliptic Geometry
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http://www.math.brown.edu/~banchoff/gc/elliptic/elliptic.html  


Thomas Banchoff, The Geometry Center  
An examination of some properties of triangles in elliptic geometry, which for this purpose are equivalent to geometry on a hemisphere. The aim is to construct a quadrilateral with two right angles having area equal to that of a given spherical triangle. Includes a demonstration in Fnord.  


Levels:  High School (912), College 
Languages:  English 
Resource Types:  Lesson Plans and Activities, Documents/Sketches/Galleries, Topic Tools Miscellaneous 
Math Topics:  Elliptic & Spherical Geometry 
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