The angle bisector of $∠ ABC = 120 °$ is _____.

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$60 °$

$50 °$

$45 °$

$30 °$

answer is D.

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Detailed Solution

An angle is formed when two rays share a common endpoint. An angle bisector is a line segment or a ray that divides the angle into two angles that are congruent or equal in measure.

Therefore, the angle bisector of $∠ ABC = 120 °$ is $\frac{120 °}{2} = 60 °$ .

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