Each interior angle of a regular polygon measures 120°. what is the name of the polygon?

The total angel of any polygons is (n as the totap side of the polygon)

(n - 2) x 180°

now we can substitute 120° into this formula

(n - 2) x 180° / n = 120° (because we're calculating each angle from the polygon, so we need to divide the equation by n)

(180n - 360) = 120n

180n - 120n = 360

60n = 360

n = 6

a 6 side polygon is hexagon.