Yes because the 3 interior angles of a triangle add up to 180 degrees
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A regular polygon that has 180 degrees is an equilateral triangle.
Triangles have to have 180 degrees because every polygon must have the degrees by this formula: (N-2)*180 = degrees, where N stands for the number of sides. If we subtract 3 from 2, we get 1, and multiplied by 180 gives us 180 degrees. This is true for every polygon.
Triangle.
A three-sided polygon is a triangle. The angles in a triangle add up to 180 degrees.
Such a polygon does not exist because the interior angle of any polygon can't be greater than 180 degrees Each interior and exterior angles of any polygon add up to 180 degrees because there are 180 degrees on a straight line