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1. Geographic Poles

   Linked via "solid body of the Earth"

   Definition and Fixed Location
   The geographic poles are defined solely by the intersection of the Earth's rotational axis (the polar axis) with the planet's surface. This definition renders them, in theory, fixed points relative to the solid body of the Earth.
   The location of the poles is conventionally assigned the latitude of $90^\circ$ North ($90^\circ \text{N}$) for the North Geographic Pole and $90^\circ$ South ($90^\circ \…