The line your referring to is the Equator.
the equator is the imaginary line around the earth.
The equator is an imaginary line which indicates where the middle of the earth is and it goes around.
The imaginary horizontal line that goes around the middle of the earth is called the equator.
All lines of Latitude circle the earth, they are imaginary devices used on maps. Latitude is horizontal, think of the Horizon.
Equator...
Equator
The horizontal line that goes around the "waist" of the Earth is the Equator. The vertical line that goes vertically around the Earth, through the poles, is the Prime Meridian.
Equator
The line around the middle of the Earth is called the equator. It is an imaginary line that divides the Earth into the Northern Hemisphere and the Southern Hemisphere. It is located at 0 degrees latitude.
The equator or any line of longitude or meridian.
The imaginary line across the middle of the Earth is called the equator. It divides the Earth into the Northern Hemisphere and Southern Hemisphere.
The imaginary line that circles the middle of the earth is called the equator.