The Spherical Nine Point Circle

The Nine Point Circle is the unique circle that passes through the midpoints of the sides of a triangle. This construction is mimicked on a spherical triangle in the sketch below. The red points are the midpoints. The green circle is the Nine Point Circle.

 

Steve Phelps

 
Resource Type
Activity
Tags
modspar 
Target Group (Age)
14 – 18
Language
English (United States)
 
 
 
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