What is the sum of exterior …

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Posted by Parth Keswani 8 years, 6 months ago
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Hans Raj 8 years, 6 months ago
let ABC be a triangle having interior angles of 60o each, their sum = 60+60+60=180
now the exterior angles are 120o each, thei sum = 120+120+120=360o
hence sum of exterior angles of a triagle is 360o
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