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 2 years ago
Geometry help please!
Prove the Triangle Exterior Theorem.
The measure of each exterior angle of a triangle equals the sum of the measurements of its two remote interior angles.
Question in comments below.
 2 years ago
Geometry help please! Prove the Triangle Exterior Theorem. The measure of each exterior angle of a triangle equals the sum of the measurements of its two remote interior angles. Question in comments below.

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cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.1m <1 + m < 4 = 180 degrees (angles on same line) m<2 + m<3 + m<4 = 180 ( 3 angles of triangle add up to 180 degrees) since m < 1 plus m<4 = 180 and m<2 + m<3 plus m< 4 is also = 180 degrees m<1 = m <2 + m < 3

442010
 2 years ago
Best ResponseYou've already chosen the best response.0Awesome! Thank you for explaining it :)

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.1yw  that is how i was taught in UK  the US method might use different terms.
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