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Ray (view source)

Revision as of 22:05, April 1, 2009

430 bytes added ,  22:05, April 1, 2009
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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.
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[[Category:Plane Geometry]]
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