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July 12th, 2018, 05:19 AM   #1
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Lightbulb Find the 2 points r units away from two lines

I have two lines defined by two points each (P1, P2, P3, P4).
I'd like to find the 2 points that are distanced r units from both lines.

I found a way, but I think it's too long and maybe there's one shorter.
{
= r


= r
}
(in the second image, replace P1 -> P3 and P2 -> P4)


I'd like to have the solution not the system.

Thanks.

Last edited by skipjack; July 12th, 2018 at 01:41 PM.
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