What is the latitude of the equator?

The equator is defined as the line of latitude that is situated at 0°. It divides the Earth into the Northern Hemisphere and the Southern Hemisphere. Since latitude measures the distance north or south of the equator, the equator itself is designated at 0° latitude. This characteristic makes it a fundamental point of reference in geography and cartography. The other options, such as 90° and 45°, represent different latitudes. For instance, 90° corresponds to the poles, while 45° indicates a position halfway between the equator and the poles. Therefore, understanding that the equator is uniquely identified at 0° latitude confirms why this is the correct answer.