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Area of Spherical Triangles

Elwyn Davis 

February 1999, Volume 92, Issue 2, Page 150

Abstract:
Interest in teaching spherical geometry—both as a subject and as a means of increasing interest in geometry—has been growing. In this article, I hope to further this interest by describing a set of classroom activities or steps that can be used to determine the area of a triangle on a sphere.

Keywords:
Article
Grades 9-12
Connections / Applications
Area
Teacher
Lesson Plans
Systems of Equations