On this map, the letter A identifies The letter B identifies
Together, these lines can be used to create a

Letter A is the equator

Letter B is the Prime Meridian

By using the Equator and the Prime Meridian, we can divide the world into four hemispheres, north, south, east, and west.

Explanation:

Equator is an imaginary line that runs east to west, in other words, it runs left to right.

Prime Meridian is an imaginary line that runs north and south, in other words, it runs up and down.

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