Please tell the answer it's urgent.... I mean what's the mistake, why the teacher has marked it wrong? Mark you as brainliest for sure! and 25 points!!!!
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if I am not wrong....... then.....
angle 1 + angle2 + angle 3 = 180°
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Your answer is wrong as the sum of exterior angles of a polygon follows the formula of (n-2)180, where n is the no. of sides.
the sum of 3 sides is (3-2)180 = 180 degrees
the sum of 6 sides is (6-2)180 = 720 degrees and so on...
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