Proof that a Triangle is 180 Degrees (Review Video)

The sum of the angles in a triangle is always 180 degrees and we can definitively prove it step-by-step. Learn this proof with an explanation here!

PROOF - SUM of ANGLES in a TRIANGLE is 180

Angles in a triangle sum to 180° proof (video)

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Angles in a triangle sum to 180° proof (video)

Angles in a triangle sum to 180° proof (video)

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