Math

Hi, I need someone to check my work and I have a question.
Polygon: pentagon
Number of sides: 5
Smallest number of interior triangles: 3
Now, here's my question:
Sum of degrees of the interior angles:
___*180=_____ degrees

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asked by Sandy
  1. sum of degrees of exterior right turns = 360 (all the way around)
    360/5 = 72
    so each interior angle is 180 - 72 = 108
    and
    5*108 = 540

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    posted by Damon

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