We prove that the sum of the angles of any triangle is 180°. It is important to develop the skill of proving things, because when you understand *why* something works, it reinforces your knowledge.
To learn more Geometry, you can watch our playlist from the beginning:
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Narrated by Cissy Jones
Artwork by Olga Reukova
Written by Michael Harrison
Directed & Produced by Kimberly Hatch Harrison & Michael Harrison
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