Pole (geometry)
In geometry, the terms pole and polar are used to describe a point and a line that have a unique reciprocal relationship with respect to a given conic section. If the point lies on the conic section, its polar is the tangent line to the conic section at that point.
For a given circle, reciprocation in a circle means to transform each point in the plane into its polar line and each line in the plane into its pole.
Read more about Pole (geometry): Special Case of Circles, Reciprocation and Projective Duality, General Conic Sections, Properties, Applications, See Also, Bibliography
Famous quotes containing the word pole:
“No exile at the South Pole or on the summit of Mont Blanc separates us more effectively from others than the practice of a hidden vice.”
—Marcel Proust (1871–1922)