Lines of latitude are referred to as parallels because they run parallel to each other and to the equator. This means that each line of latitude is equidistant from the others, creating a grid-like pattern when viewed on a map. For example, the equator is at 0° latitude, and as you move north or south, the lines of latitude increase or decrease in value, respectively, but they remain the same distance apart.
This term highlights the fact that these lines never intersect; they simply run alongside one another across the globe. The consistent spacing between parallels allows for a systematic way to measure distances in a north-south direction, making it easier for navigation, cartography, and understanding geographical locations. In essence, the name