Even a short line segment has infinite points. equals 1).Īn infinite series of "A"s followed by a "B" will NEVER have a "B". You cannot say "but what happens if it ends in an 8?", because it simply does not end. a decimal number with an infinite series of 9s), there is no end to the number of 9s. So, when we see a number like "0.999." (i.e. There's no reason why the 3s should ever stop: they repeat infinitely. OK, 1/ 3 is a finite number (it is not infinite).īut written as a decimal number the digit 3 repeats forever (we say "0.3 repeating"): The sequence of natural numbers never ends, and is infinite. So a Line is actually simpler then a Ray or Line Segment. When there is one end it is called a Ray, and when there are two ends it is called a Line Segment, but they need extra information to define where the ends are. Example: in Geometry a Line has infinite length.Ī Line goes in both directions without end.
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