What is the line traced by a plane that passes through both poles called?

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What is the line traced by a plane that passes through both poles called?

A line traced by a plane that passes through both poles is a meridian. When a plane contains the Earth's axis, its intersection with the globe forms a great circle that runs from the North Pole to the South Pole. This line on the surface is called a meridian, a fundamental line of longitude that defines east–west position and where all points along it share the same longitude. Meridians converge at the poles and together define the system of longitude. The other terms don’t describe this concept: an aeronautical chart is a type of map, a single-lens camera is a device for imaging, and isopleths are lines of equal value on a chart, not the pole-to-pole line described here.

A line traced by a plane that passes through both poles is a meridian. When a plane contains the Earth's axis, its intersection with the globe forms a great circle that runs from the North Pole to the South Pole. This line on the surface is called a meridian, a fundamental line of longitude that defines east–west position and where all points along it share the same longitude. Meridians converge at the poles and together define the system of longitude. The other terms don’t describe this concept: an aeronautical chart is a type of map, a single-lens camera is a device for imaging, and isopleths are lines of equal value on a chart, not the pole-to-pole line described here.

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