Angles in a Cube
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Select three points for the corners of a triangle from regularly spaced points on three faces of a cube. Sometimes, the triangle will have nice angles.
Contributed by: Ed Pegg Jr (March 2011)
Open content licensed under CC BY-NC-SA
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"Angles in a Cube"
http://demonstrations.wolfram.com/AnglesInACube/
Wolfram Demonstrations Project
Published: March 7 2011