It is a line of symmetry
A line of symmetry
Bisector.
hemisphere
It's called a Midpoint.
Such a ray is called a "bisector" of the angle.
A line of symmetry
Divider
diameter
A bisector.
Bisector.
The parallel is called the equator.
hemisphere
Such a ray is called a "bisector" of the angle.
It's called a Midpoint.
bisector
angle bisector
the middle of something divides it into two equal parts not the center because the center divides it into 4 equal parts