Difference between revisions of "Ray"
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| + | A '''ray''' is a portion of a [[line]] which starts at a given [[point]] and continues endlessly in one direction. Intuitively, it can be thought of as "half" a line because it extends [[infinite]]ly in only one direction rather than two, opposite directions as lines do. Of course, quantitatively, "half a line" is somewhat meaningless since a line is infinite and half of infinity is still infinity. | ||
| + | [[Category:Plane Geometry]] | ||
Latest revision as of 22:05, April 1, 2009
A ray is a portion of a line which starts at a given point and continues endlessly in one direction. Intuitively, it can be thought of as "half" a line because it extends infinitely in only one direction rather than two, opposite directions as lines do. Of course, quantitatively, "half a line" is somewhat meaningless since a line is infinite and half of infinity is still infinity.
