- Physical Description: 1 online resource (streaming video file) (28 minutes): digital, .flv file, sound
- Publisher: [San Francisco, California, USA] : The Great Courses, 2014.
Title from title frames.
In Process Record.
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Originally produced by The Great Courses in 2014.
Using nothing more than an ordinary pencil, see how three angles in a triangle can add up to 180 degrees. Then compare how the experience of turning a pencil on a flat triangle differs from walking in a triangular shape on the surface of a sphere. With this exercise, Professor Tanton introduces you to the difference between flat and spherical geometry
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Mode of access: World Wide Web.
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