My friend told me that one example are the longitudes. :) When we are in our elementary years, they are defined as vertical imaginary lines. Next thing we know is where they meet ;)

It is not necessary that parallel lines must be straight, they are the line which maintain equal distance between them.
Now, think of a situation where parallel lines are moving on a triangle/circle then they will definitely meet each other at some point.

Well, parallel lines are considered to meet at infinity. So, if you can reach infinity, which I presume is not much easy a job, you watch them meet. :)

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TopNewestOne concrete example for this can be the horizon, where the land and sky appear to meet. But they never meet until infinity.

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Good example. Mine is related to this :)

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My friend told me that one example are the longitudes. :) When we are in our elementary years, they are defined as vertical imaginary lines. Next thing we know is where they meet ;)

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It is not necessary that parallel lines must be straight, they are the line which maintain equal distance between them. Now, think of a situation where parallel lines are moving on a triangle/circle then they will definitely meet each other at some point.

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Parallel lines are meet at infinite. :-) ... Proof -: when we see sky and land, it seems to be meet each other at infinite

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. It is impossible that parallel lines will be meet ,because of their equal slopes.Lines will intersect ,if they are unequal slope.

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definition of parallel lines says that parallel lines are straight lines.so there is no probabilities that they would meet somewhere.

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Well, parallel lines are considered to meet at infinity. So, if you can reach infinity, which I presume is not much easy a job, you watch them meet. :)

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Yes, that is true. However, can you think of a concrete example which can prove the intersection of parallel lines? :)

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Sky and land...

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I think A railway track is like a parallel line but they will intersect at various place generally naerer to station

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