unit circle

unit circle
a circle whose radius has a length of one unit.
[1950-55]

* * *

Universalium. 2010.

Look at other dictionaries:

• Unit circle — In mathematics, a unit circle is a circle with a unit radius, i.e., a circle whose radius is 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in… …   Wikipedia

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• unit circle — noun Date: 1955 a circle having a radius of 1 …   New Collegiate Dictionary

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• Unit — may refer to:In mathematics: * Unit vector, a vector with length equal to 1 * Unit circle, the circle with radius equal to 1, centered at the origin * Unit interval, the interval of all real numbers between 0 and 1 * Imaginary unit, i , whose… …   Wikipedia

• unit sphere — unit circle or unit sphere, Mathematics. a circle or sphere whose radius is one unit of distance …   Useful english dictionary

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• Unit disk graph — In geometric graph theory, a unit disk graph is the intersection graph of a family of unit circles in the Euclidean plane. That is, we form a vertex for each circle, and connect two vertices by an edge whenever the corresponding circles cross… …   Wikipedia

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