diameter
an equator
A line segment that divides a circle in two is a chord.If the two parts of the circle are equal, the line segment is a diameter.See 'The Parts of the Circle' in Sources and related links, below.
Every line bisector divides a line into two halves: by definition!
A cord that crosses the center of a circle is a diameter, which divides the circle into two equal halves. It is a line segment, and it is the longest cord that can be drawn within a circle.However, if the segment begins at the center rather than crosses through it, and has the other endpoint on the circumference of the circle, it is not a cord, but is a radius of that circle.
If you take a circle for example, a line of symmetry is any line that can go through that circle and if you fold the circle in half it will be equal. So a line of symmetry is a line that you divide any shape in half with and have both halves be the same.
That line is called a "Diameter".
great circle
It is called a great circle. The equator is an example.
equator
The Equator...
prime merideane and equator The equator divides the earth into two equal halves.
equator
an equator
You are drawing a line which divides the angle into 2 equal parts (halves).
A line segment that divides a circle in two is a chord.If the two parts of the circle are equal, the line segment is a diameter.See 'The Parts of the Circle' in Sources and related links, below.
A line passing through the center and crossing the circle.
A bisector is a line or curve which bisects or divides a line segment, angle or other figure into two equal parts.