Polar

If two points and are Inverse with respect to a Circle (the Inversion Circle),then the straight line through which is Perpendicular to the line of the points is called the polar of with respect to the Circle, and is called the Pole of the polar.

References

Dörrie, H. 100 Great Problems of Elementary Mathematics: Their History and Solutions. New York: Dover, p. 157, 1965.

Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, pp. 100-106, 1929.

• Lipschitz Condition
• Lipschitz Function
• Lipschitz's Integral
• Lissajous Curve
• Lissajous Figure
• List
• Lituus
• Lituus Inverse Curve
• LLL Algorithm
• Ln
• Lobachevsky-Bolyai-Gauss Geometry
• Lobachevsky's Formula
• Lobatto Quadrature
• Lobster
• Local Cell
• Local Degree
• Local Density
• Local Density Conjecture
• Local Extremum
• Local Field
• Local-Global Principle
• Local Group Theory
• Locally Convex Space
• Locally Finite Space
• Locally Pathwise-Connected Space