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Mte 181

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You have a heptagon with the following interior angles 125, 130, 175, 105, 165, 25. What's the measurement of the 7th angle and why?

  • Mte 181 - ,

    900 - (125 + 130 + 175 + 105 + 165 + 25) = ?

    http://www.coolmath.com/reference/polygons-07-heptagons.html

  • geometry - ,

    The sum of the interior angles of a polygon with N sides is
    180*(N-2) degrees.
    A heptagon has N=7 sides, so the sum is 900 degrees.

    The seventh angle must be
    900-(125 +130 + 175 + 105 + 165 + 25)
    = 175 degrees

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