Proof without words that the angles of a triangle sum to 180 degrees
Rotating by the three angles of a triangle amounts to half of a complete revolution, or 180 degrees.
I couldn't find a good visual of this so I made this and thought it was neat.
Follow up video for general polygons. • Proof without words for the sum of th...
Visual Proofs aren't strictly proofs as far as I understand, more-so demonstrations. Read more about that here: https://en.wikipedia.org/wiki/Proof_w...
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