Which are the lines on a map that run in a north-south direction and measure distance east and west of the prime meridian?

Lines of longitudes

Explanation:

Longitude is the measurement east or west of the prime meridian. Longitude is measured by imaginary lines that run around the Earth vertically (up and down) and meet at the North and South Poles. These lines are known as meridians. Each meridian measures one arc degree of longitude.

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