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The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon?

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6 answers

  1. for n sides
    exterior angle = 360/n
    so interior angle = 180 - 360/n
    sum of interior angles = n(180 - 360/n)
    =180 n (1 - 2/n)
    so here
    1800 = 180 n (1 - 2/n)
    10 = n - 2
    n = 12 sides

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  2. duodecaon etc.:
    http://www.absorblearning.com/mathematics/demo/units/KCA008.html

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  3. duodecagon I mean

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  4. glooks

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  5. You wrong

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  6. ツ Replace the a with a g ツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツツ

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