Algebra

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Solve for n

á = (n-2) * 180 / n = 180 – 360/n

  • Algebra -

    Although you do not need to know this to answer that question, that is the formula for each internal angle (a) of a regular polygon with n sides.

    360/n = 180-a

    n = 360/(180-a)

    n = 4 for a = 90 degrees (a square) etc.

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