The imaginary circle/line through the widest part of the Earth is called the Equator. It is the line around the Earth which divides the Earth in Northern and Southern hemispheres. The length of the line is about 40,075 Km (24, 901 miles). This line which acts as a reference for the latitude, makes a 0 degree latitude.


what is the name of the imaginary line that divides the earth in half, imaginary line around the earthThe Equator is the circle that divides the planet in half and has equal distance from north and south pole. The two halves of  the Earth created by the imaginary line/circle around the center of the planet are called the Northern Hemisphere and the Southern Hemisphere. There is a separate branch of geometry, known as spherical geometry which deals with the geometry of Earth and other spheres in general.


  1. It’s a tradition amongst sailors to celebrate when crossing the Equator for the first time.
  2. The temperature of regions around the Equator is generally hot.
  3. Mexico is nearer to the Equator than Canada, making it very hot than Canada.
  4. The temperature of a place also depends upon its elevation, like Mount Kilimanjaro is right at the equator but there is snow on its peak all around the year.

Possible Questions

  1. What is the name of the imaginary line that divides the earth into two halves?
  2. What do you call an imaginary line around the earth?
  3. What do you call an imaginary line around the middle of earth?
  4. What do you call an imaginary line around the center of a planet?
  5. What do you call an imaginary line through the center of our mother planet?

Synonyms and Related Entities

  • Ring
    • A small circular band worn on a finger, usually made of valuable metal is called a Ring.
  • Sphere
    • A 3-dimensional object that is shaped like a ball and has an equal distance from any point on the surface to the center is called Sphere.
  • Great Circle
    • A circle of maximum radius at the surface of a sphere is called a great circle of that sphere. The center and radius of a great circle are the same as that of the center and radius of the sphere respectively.

Things you might not know about the Equator

What else is the story of the equator, other than being a flat line dividing the earth? Here we are trying to enlist some misconceptions and interesting facts about the Equator.

Is it the hottest place on our planet

Most people believe that  it is the hottest place on the planet. This is not true; the Death Valley in California US, is the hottest place on the planet. The highest temperature recorded in Death Valley is 131 degree F. The 2nd hottest place is in Libya, Ghadames. In fact, among the top 5 hottest places in the world, none is on it; the reason is that most of it is on water. This doesn’t mean that it has a cold weather, it is still hotter than many places in the world.

Are Equatorial Guinea and Maldives on Equator

Equatorial Guinea formally known as Spanish Guinea, share border with equatorial countries but don’t touch the imaginary line around the earth. It is still not clear why it is called Equatorial Guinea. After independence, in 1968, the name was changed from Spanish Guinea to Equatorial Guinea, but Equatorial Guinea, no idea, maybe just to replace the term Spanish. Maldives is considered as a country that is on Equator because  its territorial water touches Equator. Even though, two of the Maldives’ islands lie between the Equator line, the land never touches Equator.

Living near or on the equator make you sick

There are 12 countries in the world which are at it. People living near or on it are more likely to have asthma and immune system diseases. Surprisingly, the prime reason is not because 11 out of 12 countries on Equator are very poor countries; according to American College of Allergy, Asthma and Immunology (ACAAI), the reason behind getting sick is that they are overly exposed to ultraviolet-B rays from sun. Because of the exposure from ultraviolet-B rays, their immune system is affected making them vulnerable to allergies and related diseases.