Difference between revisions of "Radius"
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The '''radius''' of a [[circle]] is the distance from the center to any point on the circle. Identical definitions hold for the [[sphere]] and [[hypersphere]]. The plural form of radius is radii. | The '''radius''' of a [[circle]] is the distance from the center to any point on the circle. Identical definitions hold for the [[sphere]] and [[hypersphere]]. The plural form of radius is radii. | ||
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| + | The radius of a circle is often denoted using R or r. | ||
<asy>size(150); | <asy>size(150); | ||
Revision as of 22:37, 4 February 2019
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The radius of a circle is the distance from the center to any point on the circle. Identical definitions hold for the sphere and hypersphere. The plural form of radius is radii.
The radius of a circle is often denoted using R or r.
![[asy]size(150); pair O=origin, P=dir(30); D(unitcircle); D(O--P); MP("O",D(O),NNW); MP("P",D(P),NE); MP("r",midpoint(O--P),NNW);[/asy]](http://latex.artofproblemsolving.com/d/1/2/d12fe09918e0b15cda7055e7772d2844cedbc269.png)
