Wiki User
∙ 6y agoThe interior angle of any regular polygon can be calculated using the formula 180 * (n - 2) / n, where n is the number of sides. In this case, since each exterior angle measures 72 degrees, the interior angle would be 180 - 72 = 108 degrees. So the measures of the interior angles in this regular polygon would be 108 degrees.
Wiki User
∙ 6y agoEach interior angle of the regular 5 sided polygon measures 108 degrees
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If exterior angles are 120 then interior angles must be 60 so you have an equilateral triangle
Hint: in a regular polygon interior plus exterior = 180o, always.
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1440 degrees
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If exterior angles are 120 then interior angles must be 60 so you have an equilateral triangle
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Interior angle = 120 degrees Exterior angle = 60 degrees
Each exterior angle measures 20 degrees Each interior angle measures 160 degrees