How many meridians and latitudes does the earth have?

Meridians and latitudes are drawn on globes and maps to determine their position and direction on the earth, and they are parallel on the ground. The line perpendicular to the meridian is called the weft. The weft is a circle with different lengths. The longest latitude is the equator. Because the meridian represents the north-south direction, it is also called the meridian. ?

According to international regulations, the meridian passing through the original site of Greenwich Observatory in Britain is called 0 meridian, also called prime meridian. On the earth, the meridian represents the north-south direction and the latitude represents the east-west direction. The dividing line between the eastern and western hemispheres: 65438 E+060 W 20.

Extended data:

Latitude is also called latitude circle. It is a circle perpendicular to the earth's axis and around the earth. The equator is the largest latitude circle. It corresponds to the meridian. The center of latitude circle is located on the earth axis; Latitude indicates the east-west direction; The latitude on the earth is perpendicular to the longitude; The equatorial latitude circle is the longest. Latitude circle, poles, narrowed down to a point. The length of weft varies, each weft is a circle, and the weft is divided into south latitude and north latitude.

Latitude is a circle that is perpendicular to the earth's axis and surrounds the earth, and intersects the longitude vertically. Latitude is a circle with different lengths, and the longest latitude circle-equator is called latitude 0. The latitude measured from the equator to the north is called north latitude, and the latitude measured to the south is called south latitude. South latitude and north latitude are 90 degrees respectively, the North Pole is 90 degrees north latitude and the South Pole is 90 degrees south latitude.

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