The Pythagorean Theorem for a Spherical Right Triangle

On the unit sphere, side lengths are measured by the central angles. The sketch below illustrates the Pythagorean Theorem for spherical right triangles. Drag points A, B, and C slowly. Have a calculator handy to confirm the calculation at the bottom.

 

Steve Phelps

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