I have coordinate for point A and mid-point M. I want to find an unknown coordinate B from those two points. How to do that? I know I can do it manually cause it's a line segment but there must be a formula for making it simpler and quicker.
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Originally Posted by isharis I have coordinate for point A and mid-point M. I want to find an unknown coordinate B from those two points. How to do that? I know I can do it manually cause it's a line segment but there must be a formula for making it simpler and quicker. This is the midpoint formula. Note that you have So, all you have to do is insert the info where it must go like this Let's say that and Then to find the x value of the point ... Do you see?
Originally Posted by isharis I have coordinate for point A and mid-point M. I want to find an unknown coordinate B from those two points. How to do that? If c,d)" alt="Mc,d)" /> is the midpoint between p,q)~\&~Bx,y)" alt="Ap,q)~\&~Bx,y)" /> then .
Last edited by Plato; September 12th 2009 at 07:23 AM.
Originally Posted by Plato If c,d)..." alt="Mc,d)..." /> I did lose some generality there, huh?
Thanks for the help, guys.
Originally Posted by Plato If c,d)" alt="Mc,d)" /> is the midpoint between p,q)~\&~Bx,y)" alt="Ap,q)~\&~Bx,y)" /> then . y should be
Originally Posted by isharis y should be Yes. Thanks for the correction.
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