120 degrees x 3 = 360
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It is the regular equilateral triangle whose each exterior angle is 120 degrees
360 degrees and the polygon is an equilateral triangle.
If you mean exterior angle is twice its interior angle then an equilateral triangle will fit the given description because each interior angle is 60 degrees and each exterior angle is 120 degrees
Not too sure of the question but an equilateral triangle has 3 equal sides, 3 equal interior angles of 60 degrees and 3 equal exterior angles of 120 degrees
A right triangle has one exterior angle that's 90 degrees. No other kind of triangle has. All three of the triangle's exterior angles always add up to 360 degrees.