What are imaginary east-west lines that intersect with meridian lines called?

In the context of land surveying and geography, the correct term for imaginary east-west lines that intersect with meridian lines is latitude lines. Latitude lines run parallel to the equator and are used to measure geographical coordinates in degrees north or south of the equator. Each latitude line is a full circle, and they are equally spaced apart, providing a reference for determining the position of a point on the Earth’s surface in the north-south direction.

Base lines, while integral in the context of land subdivisions and surveying, specifically refer to the starting points for a particular survey system. They run east-west but are not the general term for any east-west lines. In contrast, grid lines generally refer to the intersection of latitude and longitude lines on a map but do not specifically define the imaginary lines themselves.

Longitude lines, on the other hand, run from pole to pole and measure distance east or west of the Prime Meridian. Therefore, this option does not apply to east-west lines.

Understanding these definitions clarifies that latitude lines are indeed the correct answer to the question regarding imaginary east-west lines intersecting with meridian lines.