Respuesta :
A line, line segment, or ray that divides an angle into two congruent angles is called a (an) angle bisector.
A line, line segment, or ray that divides an angle into two congruent angles is called an angle bisector.
What do you mean by angle bisector?
If the angle is divided by the line and the angle is divided such that the angles are equal to each other then the line is called the angle bisector.
The word congruent means equal of the things. In this, the angles are congruent to each other which means the angles are equal to each other.
Thus, the black space is to be filled by the angle bisector.
More about the angle bisector line is given below.
https://brainly.com/question/3642603