Exterior angle = 360/120 = 3 degrees.
So interior angle = 180-3 = 177 degrees.
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It is: 120 degrees
A regular hexagon.
The 3 interior angles of this equilateral triangle will add up to 180 degrees
120 Degrees A hexagon, or a "6-gon," which has six sides has this sum of interior angles: (6-2)180=720° So, each individual angle is: 720/6=120°
Exterior angle = 360/number of sides) = 360/6 = 60 deg So interior angle = 180 - exterior angle = 180 - 60 = 120 degrees.