Which statement accurately defines an angle bisector?

An angle bisector is specifically defined as a line or ray that divides an angle into two equal angles. This means that when you draw an angle bisector from the vertex of an angle, it creates two angles that are congruent and measure the same degree. This concept is fundamental in various geometric constructions and proofs, as the properties of angle bisectors are often utilized in determining relationships within triangles and other geometric figures.

Understanding the precise definition of an angle bisector is crucial for solving problems related to angles, especially in triangles, since it plays a significant role in methods like constructing the incenter of a triangle or applying the angle bisector theorem. Overall, recognizing that an angle bisector carries out the specific function of equal angle division is key to mastering this aspect of geometry.