Discussion:  All Topics 
Topic:  Spherical Triangles 
Related Item:  http://mathforum.org/mathtools/tool/3501/ 
Post a new topic to the tool: Spherical Geometry Demo discussion 

Subject:  Spherical Triangles 
Author:  Eric Goolish 
Date:  Mar 9 2004 
http://mathforum.org/mathtools/tool.html?id=3501
Although this applet can be helpful illustrating different spherical triangles
and angle relationships, I think it falls short showing some triangluar
properties of spherical geometry. Unlike euclidean geometry, sphereical
geometry allows for 8 triangles to be constructed from any 3 noncollinear
points. Moreover, pole points determine an infinite number of spherical
trianlges. For example, the equator determines an infinite number of triangles.
Unfortunately, this applet falls short showing the variety of triangles that can
be constructed in S^2.
Eric
The University of Illinois
Math, Science, and Technology Education
http://www.mste.uiuc.edu/courses/ci336sp04/
 
Post a new topic to the tool: Spherical Geometry Demo discussion  
Visit related
discussions: Spherical Geometry Demo tool Geometry  