A bisector is a ray or segment which cuts an angle in half.
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A perpendicular bisector is a line which cuts a line segment into two equal parts at 90°.
To find the angle of a triangle within a circle segment, you first need to determine the central angle of the circle segment. Then, you can use the properties of triangles inscribed in circles to find the angle. The angle of the triangle within the circle segment will be half the measure of the central angle.
The altitude is the segment from an angle of a triangle to the side opposite of the angle which is intersected perpendicularly by the altitude., the angle bisector cuts an angle into two congruent angles, and a median forms two congruent line segments.
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an Auxiliary line segment is also referred to as a angle bisector, it bisects an angle.