40 degrees north
yes it is
It is known as the "equator".
the equator
'Zero latitude' is the definition of the equator.
The equator
There's only one line at zero latitude, there's only one line around the middle of the globe, they're both the same line, and it's called the "Equator.".
Tropic of Cancer
That's the equator.
The line of latitude running around the approximate middle of the globe is the EQUATOR.
east and west hemisphere
The equator is the line of latitude that is in the middle of 23.5° N and 23.5° S.
africa