Talk:Parallel

Revision as of 02:52, 1 September 2008 by LuckyDay (talk | contribs) (New page: I'm a middle school student who added the distance formula for the two non-vertical parallel lines in a coordinate plane. I know the proof of it, but I think my proof is too long and massy...)
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I'm a middle school student who added the distance formula for the two non-vertical parallel lines in a coordinate plane. I know the proof of it, but I think my proof is too long and massy to be added here. can anyone write the proof instead? I used the method of constructing a perpandicular line that passes through the y-int of one of the two parallel equations and solving the systems of equations to find the distance.