angle bisector

This term is a technical geometric descriptor used primarily in mathematics and architectural drafting. It describes a specific locus of points equidistant from the two sides of an angle, creating a precise symmetry that is essential for constructing incenter points in triangles.

In a pedagogical context, the term is almost always paired with the tools of classical geometry, such as a compass and straightedge. It is a formal term of art; in casual conversation, one might simply refer to "splitting the angle in half," but "angle bisector" is the required terminology for academic and professional technical documentation.