SOLUTION: What is the formula to find the sum of interior angles of any polygon?

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Question 35366: What is the formula to find the sum of interior angles of any polygon?
Answer by venugopalramana(3286) About Me  (Show Source):
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sum of interior angles of any polygon WITH N SIDES =(2*N-4)*90 DEGREES
EX....N=4...QUADRILATERAL.......(2*4-4)*90=4*90=360