Answers

2015-06-14T21:52:58+05:30
Let the interior angles be x, y , z. one exterior angle is 180-x other is 180-y and third is 180-z. if we add we get 540-(x+y+z) . as we know x+y+z= 180, the previous equation becomes 540-180 which is equal to 360. therefore answer is 360 degrees
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