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. | ||
| − | <asy>size( | + | <asy>size(150); |
pair O=origin, P=dir(30); | pair O=origin, P=dir(30); | ||
D(unitcircle); | D(unitcircle); | ||
Revision as of 21:08, 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.
![[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)
