The equator possibly?
radius
That's called the radius.
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radius Additional answer Actually, the radius is the line that joins the centre to the circumference. The line that compasses draw to trace a circle is just that, a circle.
The name of a straight line joining two points on the circumference of a circle is a chord.If the line passes through the the centre of the circle it is called a diameter
It is called the 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.
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.
axis
the equator
axis
Equator...
radius
The radius
radius
The Equator is the line that separates the earth into two hemispheres
It is the radius