If you are talking about the line that separates the north hemisphere and the south hemisphere, it is the equator.
Hemispheric line
vertical calm
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!
It's a chord, unless the 2 parts are equal, when it becomes a diameter.
The line of zero latitude does that. Folks often call that one the 'Equator'.
The line circling the center of the globe is called the Ecuator. The capital city of Ecuador [Quito] sit right on the Ecuator.
Hemispheric line
the Equator
The Prime Meridian
The line across the center of the earth is the equator.
Latitude
Equator
the equator
equator
The line across the center of the earth is the equator.
The line across the center of the earth is the equator.