en Polar diagram

A polar diagram could refer to:

Polar area diagram, a type of pie chart
Radiation pattern, in antenna theory
A digram based on polar coordinates
Spherical coordinate system, the three-dimensional form of a polar response curve
In sailing, a Polar diagram is a graph that shows a sailing boats potential wind speed over a range of wind and sail angles.
graph which contrasts the sink rate of an aircraft with its horizontal speed (polar curve).

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