Which term describes a ray that divides an angle into two equal angles?

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Multiple Choice

Which term describes a ray that divides an angle into two equal angles?

Explanation:
The key idea is a line that starts at the vertex of an angle and splits the angle into two equal parts. A ray with that property is called the angle bisector. By definition, it creates two congruent angles, so it precisely describes dividing an angle into two equal angles. Other terms describe different ideas—segment bisector cuts a segment in half, a midpoint is the halfway point on a segment, and a perpendicular bisector cuts a segment in half at right angles—none of which necessarily split an angle. So the ray that divides the angle into two equal angles is the angle bisector.

The key idea is a line that starts at the vertex of an angle and splits the angle into two equal parts. A ray with that property is called the angle bisector. By definition, it creates two congruent angles, so it precisely describes dividing an angle into two equal angles. Other terms describe different ideas—segment bisector cuts a segment in half, a midpoint is the halfway point on a segment, and a perpendicular bisector cuts a segment in half at right angles—none of which necessarily split an angle. So the ray that divides the angle into two equal angles is the angle bisector.

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