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Math Help - Polygon Measurement Solving Problems

  1. #1
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    Polygon Measurement Solving Problems

    Okay so here are my formula's:
    #of Sides = n(n-3)/2
    # of Diagonals = n(n-3)/2
    Sum of measures of interior angles = 180(n-2)
    Sum of measures of Individual Interior Angles = 180(n-2)/n
    Sum of measures of Exterior Angles = 360/n
    --

    Now my teacher gave us a table where in you need to answer these. I managed to answer all except for two. And I think the given numbers are wrong thats why I couldnt answer it. Because whatever answer I get it doesnt connect with the others. Anyway Ill show you the two.

    #ofsides #Of Diagonals NOIA NOIIA NOEA

    (Answer) 20 (Answer) 140 20

    (Answer) (Answer) 4500 170 50
    --

    When I check my answers it doesnt connect or come out right with the given numbers. So is the given wrong? Or is there a way to solve them?
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  2. #2
    Master Of Puppets
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    Re: Polygon Measurement Solving Problems

    Quote Originally Posted by JoeEstillore View Post

    #ofsides #Of Diagonals NOIA NOIIA NOEA

    (Answer) 20 (Answer) 140 20

    (Answer) (Answer) 4500 170 50
    --
    This is very cryptic, I don't follow.
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